South Carolina Code of Regulations
Chapter 38 - DEPARTMENT OF PUBLIC SAFETY
Article 5 - STATE TRANSPORT POLICE REGULATIONS
Subarticle 1 - UNMANUFACTURED FOREST PRODUCTS TRUCKING REGULATIONS
Appendix A - NORTH AMERICAN STANDARD OUT-OF-SERVICE CRITERIA JANUARY 1, 2004 COMMERCIAL VEHICLE SAFETY ALLIANCE
Part II - SOUTH CAROLINA VEHICLE OUT-OF-SERVICE CRITERIA FOR UNMANUFACTURED FOREST PRODUCTS POLICY STATEMENT

Universal Citation: SC Code Regs II

Current through Register Vol. 48, No. 9, September 27, 2024

The purpose of 38-382 is to identify critical vehicle inspection items and provide criteria for placing vehicle(s) out-of-service subsequent to a safety inspection.

Except where state, provincial, or federal laws preclude enforcement of a named item, motor carrier safety enforcement personnel and their jurisdictions shall comply with these vehicle Out-of-Service violation standards.

NOTE: Decal Qualification: Each vehicle (truck, truck tractor, semitrailer, trailer, etc.) must "pass" inspection to qualify for a decal. "Pass Inspection" means that no violations/defects are found of the vehicle inspection items contained in the definitions of Level I and Level V inspections. For the purpose of decal issuance, if no violation is detected during a Level I or Level V inspection due to a hidden part, which includes the vehicle inspection items listed in the definitions, a decal shall be applied.

The decal criteria apply only to the condition of the vehicle, not the driver. It is possible for a driver to be Out-of-Service and still have vehicle(s) qualify for a decal. If each vehicle, whether used singly or in a combination, passes inspection, a current CVSA decal shall be affixed and no other CVSA decals shall be visible.

OUT-OF-SERVICE: Authorized personnel shall declare and mark "out of service" any motor vehicle which by reason of its mechanical condition or loading would likely cause an accident or breakdown. An "Out of Service Vehicle" sticker shall be used to mark vehicles "out of service". No motor carrier shall require nor shall any person operate any commercial motor vehicle declared and marked "out of service" until all repairs by the "out of service notice" have been satisfactorily completed.

No person shall remove the "Out of Service Vehicle" sticker from any motor vehicle prior to completion of all repairs required by the "out of service notice".

Violations other than out of service conditions detected during the inspection process will not preclude the completion of the current trip or dispatch. However, such violations must be corrected or repaired prior to re-dispatch.

These criteria are neither suited nor intended to serve as vehicle maintenance or performance standards.

1. Brake System.

a. Defective Brakes.

The number of defective brakes is equal to or greater than 20 percent of brakes on the vehicle or combination. A defective brake includes any brake that meets one of the following criteria: (NOTE: Steering axle brakes under 1.b are to be included in 20 percent criterion.)

(1) Absence of effective braking action upon application of the service brakes (such as brake linings failing to move or contact braking surface upon application). (38-393.48(a))

(2) Missing or broken mechanical components including: shoes, linings, pads, springs, anchor pins, spiders, cam rollers, push-rods, and air chamber mounting bolts. (38-393.48(a))

(3) Loose brake components including air chambers, spiders, and cam shaft support brackets. (38-393.48(a))

(4) Audible air leak at brake chamber, (Example - ruptured diaphragm, loose chamber clamp, etc.) NOTE: Also check under 1.h. -Air Loss Rate. (38-396.3(a)(1))

(5) Brake adjustment limits. Bring reservoir pressure between 90 to 100 psi, turn engine off and then fully apply the brakes.
(a) One brake at 1/4 inch or more beyond the readjustment limit. (Example: Type 30 clamp type brake chamber pushrod measured at 2-1/4 inches would be one defective brake.) (38-396.3(a)(1))

(b) Two brakes less than 1/4 inch beyond the readjustment limit also equal one defective brake. (Examples: Clamp type 30 pushrods measure - Two at 2-1/8 inches. This example would equal one defective brake. (38-396.3(a)(1))

(c) Any wedge brake where the combined brake lining movement of both top and bottom shoes exceeds 1/8 inch. (38-396.3(a)(1))

Brake Adjustment. Shall not meet or exceed those specifications contained hereunder relating to "Maximum stroke at which Brakes Must Be Readjusted." (Dimensions are in inches.)

COMMERCIAL VEHICLE SAFETY ALLIANCE

OUT-OF-SERVICE CRITERIA

REFERENCE CHARTS

TYPE

OUTSIDE DIAMETER

BRAKE ADJUSTMENT LIMIT

6

4-1/2

1-1/4

9

5-1/4

1-3/8

12

5-11/16

1-3/8

16

6-3/8

1-3/4

20

6-5/32

1-3/4

24

7-7/32

1-3/4

30

8-3/32

2

36

9

2-1/4

'LONG STROKE' CLAMP TYPE BRAKE CHAMBER DATA

TYPE

OUTSIDE DIAMETER

BRAKE ADJUSTMENT LIMIT

12

5-11/16

1-3/4

16

6-3/8

2.0

20

6-25/32

2.0

24

7-7/32

2.0

24*

7-7/32

2.5

30

8-3/32

2.5

* For 3" maximum stroke type 24 chambers

BOLT TYPE BRAKE CHAMBER DATA

TYPE

OUTSIDE DIAMETER

BRAKE ADJUSTMENT LIMIT

A

6-15/16

1-3/8

B

9-3/16

1-3/4

C

8-1/16

1-3/4

D

5-1/4

1-1/4

E

6-3/16

1-3/8

F

11

2-1/4

G

9-7/8

2

ROTOCHAMBER DATA

TYPE

OUTSIDE DIAMETER

BRAKE ADJUSTMENT LIMIT

9

4-9/32

1-1/2

12

4-13/16

1-1/2

16

5-13/32

2

20

5-15/16

2

24

6-13/32

2

30

7-1/16

2-1/4

36

7-5/8

2-3/4

50

8-7/8

3

DD-3 BRAKE CHAMBER DATA

TYPE

OUTSIDE DIAMETER

BRAKE ADJUSTMENT LIMIT

30

8-1/8

2-1/4

NOTE: This chamber has three air lines and is found on motor coaches.

WEDGE BRAKE DATA

The combined movement of both brake shoe lining scribe marks shall not exceed 1/8 inch (3.18mm) a. Defective Brakes (cont'd) (6) Brake linings or pads. (Except on power unit steering axles)

(a) Cracked, loose, or missing lining.
i. Lining cracks or voids of 1/16"' in width observable on the edge of the lining.

ii. Portions of a lining segment missing such that a fastening device (rivet or bolt) is exposed when viewing the lining from the edge.

iii. Cracks that exceed 1-1/2"' in length.

iv. Loose lining segments. (Approximately 1/16"' or more movement.)

v. Complete lining segment missing. (38-393.47)

(b) Evidence of oil seepage into or out of the brake lining/drum interface area. This must include wet contamination of the lining edge accompanied by evidence that further contamination will occur - such as oil running from the drum or a bearing seal.

NOTE: Grease on the lining edge, back of shoe, or drum edge and oil stains with no evidence of fresh oil leakage are not conditions for out-of-service. (38-393.47)

(c) Lining with a thickness less than 3/16 inch for a shoe with a continuous strip of lining or 1/4 inch for a shoe with two pads for drum brakes or to wear indicator if lining is so marked, or less than 1/8 inch for air disc brakes, and 1/16 inch or less for hydraulic, disc, drum and electric brakes. (38-393.47)(7) Missing brake on any axle required to have brakes. (38-393.42)

b. Steering Axle Brakes

In addition to being included in the 20 percent criterion, the following criteria places a vehicle in an out-of-service condition:

(1) Absence of effective braking action on any steering axle of any vehicle required to have steering axle brakes, including the dolly and front axle of a full trailer. (38-393.48(a))

(2) Mismatch across any power unit steering axles of:
(a) Air chamber sizes. (38-396.3(a)(1))

(b) Slack adjuster length. (38-396.3(a)(1))

(3) Brake linings or pads on the steering axle of any power unit:
(a) Cracked, loose, or missing lining.
i. Lining cracks or voids of 1/16"' in width observable on the edge of the lining.

ii. Portions of a lining segment missing such that a fastening device (rivet or bolt) is exposed when viewing the lining from the edge.

iii. Cracks that exceed 1-1/2"' in length.

iv. Loose lining segments. (Approximately 1/16"' or more movement.)

v. Complete lining segment missing. (38-393.47)

(b) Evidence of oil seepage into or out of the brake lining/drum interface area. This must include wet contamination of that lining edge accompanied by evidence further contamination will occur--such as oil running from the drum or bearing seal.

NOTE: Grease on the lining edge, back of shoe, or drum edge and oil stains with no evidence of fresh oil leakage are not conditions for out-of-service. (38-393.47)

(c) Lining with a thickness less than 3/16 inch for a shoe with a continuous strip of lining or 1/4 inch for a shoe with two pads for drum brakes or to wear indicator if lining is so marked, or less than 1/8 inch for air disc brakes, and 1/16 inch or less for hydraulic disc, drum and electric brakes. (38-393.47)

c. Parking Brakes
(1) Inoperable breakaway braking system on trailer(s).

(NOTE: No trailer brake application upon actuation of the parking brake control indicates an inoperable breakaway braking system.) (See item (i), page 17) (38-393.43(d))

(2) Any non-manufactured holes or cracks in the spring brake housing section of a parking brake. (38-396.3(A)(1))

d. Brake Drums or Rotors
(1) Drums with any external crack or cracks that open upon brake application.

(NOTE: Do not confuse short hairline heat check cracks with flexural cracks.) (38-396.3(a)(1))

(2) Any portion of the drum or rotor (discs) missing or in danger of failing away. (38-396.3(A)(1))

e. Brake Hose
(1) Hose with any damage extending through the outer reinforcement ply. (Rubber impregnated fabric cover is not a reinforcement ply.) (Thermoplastic nylon may have braid reinforcement or color difference between cover and inner tube. Exposure of second color is out-of-service.) (38-396.3(a)(1))

(2) Bulge/swelling when air pressure is applied. (38-396.3(a)(1))

(3) Hose with audible leak at other than a proper connection. (38-396.3(a)(1))

(4) Two hoses improperly joined such as a splice made by sliding the hose ends over a piece of tubing and clamping the hose to the tube. (38-393.46)

(5) Air hose cracked, broken, or crimped in such a manner as to restrict air flow. (38-393.45(a)(4))

f. Brake Tubing
(1) Tubing with an audible leak at other than a proper connection. (38-396.3(a)(1))

(2) Tubing cracked, damaged by heat, broken, or crimped. (38-396.46(f))

g. Low Pressure Warning Device

Low pressure warning device missing, inoperative, or does not operate at 55 psi and below, or 1/2 the governor cut-out pressure, whichever is less.

NOTE: If either an audible or visual warning device is working, vehicle should not be placed out-of-service. (38-393.51)

h. Air Loss Rate

If an air leak is discovered and the reservoir pressure is not maintained when:

(1) Governor is cut-in;

(2) Reservoir pressure is between 80 & 90 psi;

(3) Engine is at idle; and

(4) Service brakes are fully applied. (38-396.3(a)(1))

i. Tractor-Protection System

Inoperable or missing tractor protection values on power unit. (38-393.43) (See item (c)(1), page 15.

j. Air Reservoir

Air reservoir security; separated from its original attachment points. (38-393.50)

k. Air Compressor

(Normally to be inspected when readily visible or when conditions indicate compressor problems)

(1) Loose compressor mounting bolts. (38-396.3(a)(1))

(2) Cracked, broken, or loose pulley. (38-396.3(a)(1))

(3) Cracked or broken mounting brackets, braces, or adapters. (38-396.3(a)(1))

l. Electric Brakes
(1) Absence of braking action on 20 percent or more of the braked wheels of a vehicle or combination of vehicles. (38-393.48(a))

(2) Missing or inoperable breakaway braking device. (38-393.48(d))

m. Hydraulic Brakes

Including: Power Assist over Hydraulic and Engine Driven Hydraulic Booster)

(1) No pedal reserve with engine. (38-396.3(a)(1))

(2) Master cylinder less than 1/4 full.

(NOTE: Normally to be inspected when readily visible or problems are apparent.) (38-396.3(a)(1))

(3) Power assist unit fails to operate. (38-396.3(a)(1))

(4) Seeping or swelling brake hose(s) under application of pressure. (38-396.3(a)(1))

(5) Missing or inoperable breakaway braking device. (38-393.43)

(6) Hydraulic hose(s) abraded (chafed) through outer cover-to-fabric layer. (38-393.45)

(7) Fluid lines or connections restricted, crimped, cracked, or broken. (38-396.3(a)(1))

(8) Any visually observed leaking hydraulic fluid in the brake system upon full application. (38-396.3(a)(1))

(9) Hydraulic System: Brake failure light/low fluid warning light on and/or inoperative. (38-393.51)

n. Vacuum System
(1) Insufficient vacuum reserve to permit one full brake application after engine is shut off. (38-393.50)

(2) Vacuum hose(s) or line(s) restricted, abraded (chafed) through outer cover-to-ply, crimped, cracked, broken, or has collapse of vacuum hose(s) when vacuum is applied. (38-396.3(a)(1))

2. Coupling Devices (When in use.)

a. Fifth Wheels (Lower Coupler Assembly)
(1) Mounting to frame.
(a) More than 20 percent of fasteners on either side missing or ineffective. (38-393.70)

(b) Any movement between mounting components. (38-393.70)

(c) Any mounting angle iron cracked or broken.

SPECIAL NOTE: Any repair cracking, well defined (especially open) cracks in stress or load-bearing areas, cracks through 20 percent or more original welds or parent metal. (38-393.70)

(2) Mounting plates & pivot brackets.
(a) More than 20 percent of fasteners on either side missing or ineffective. (38-393.70)

(b) Any welds or parent metal cracked.

SPECIAL NOTE: Any repair weld cracking, well defined (especially open) cracks in stress or load-bearing areas, cracks through 20 percent or more original welds or parent metal. (38-393.70)

(c) More than 3/8 inch horizontal movement between pivot bracket pin and bracket. (38-393.70)

(d) Pivot bracket pin missing or not secured. (38-393.70)

(3) Sliders
(a) More than 25 percent of latching fasteners, per side, ineffective. (38-393.70)

(b) Any fore or aft stop missing or not securely attached. (38-393.70)

(c) Movement of more than 3/8 inch between slider bracket and slider base. (38-393.70)

(4) Operating handle.

Operating handle not in closed or locked position. (38-393.70)

(5) Fifth wheel plate.

Cracks in fifth wheel plate. (38-393.70)

(SPECIAL NOTE:) Any repair weld cracking, well defined (especially open) cracks in stress or load-bearing areas, cracks through 20 percent or more original welds or parent metal.

EXCEPTIONS:

(1) Cracks in fifth wheel approach ramps, and

(2) casting shrinkage cracks in the ribs of the body of a cast fifth wheel.

(6) Locking mechanism

Locking mechanism parts missing, broken, or deformed to the extent the kingpin is not securely held. (38-393.70)

b. Upper Coupler Assembly (Including kingpin)
(1) Horizontal movement between the upper and lower fifth wheel halves exceeds 1/2 inch. (38-393.70)

(2) Kingpin can be moved by hand in any direction.

NOTE: This item is to be used when uncoupled semitrailers are encountered, such as at a terminal inspection, and it is impossible to check item (1) above. Kingpins in coupled vehicles are to be inspected using items (1) above and items (3) and (4) below. Vehicles are not to be uncoupled. (38-393.70)

(3) Kingpin not properly engaged. (38-393.70)

(4) Any semitrailer with a bolted upper coupler having fewer effective bolts than shown in the following table: MINIMUM TOTAL QUANTITY OF BOLTS (Total minimum quantity of bolts must be equally divided with 1/2 on each side of the coupler.)

BOLT SIZE

1/2 inch

5/8 inch or larger

10 - (5 each side)

8 - (4 each side)

Note: This bolt size table applies to trailers having a 68,000 lbs. maximum gross vehicle weight rating (GVWR). Such trailers are typically used in tractor-semitrailer combinations with a maximum gross combination weight rating (GCWR) of 80,000 lbs. It is based on Truck Trailer Manufacturers Association Technical Bulletin No. 110 (TB 110) "Upper Coupler Attachment Bolts for Trailers with Repositionable Upper Couplers (4/1/98)". Table 1 in TB 110 also has specifications covering trailers with an 85,000 lbs. and 105,000 lbs. GVWR.

(5) Any welds or parent metal cracked.

SPECIAL NOTE: Any repair weld cracking, well defined (especially open) cracks in stress or load-bearing areas, cracks through 20 percent or more original welds or parent metal. (38-393.70)

c. Pintle Hooks

Mounting and integrity

(1) Loose mounting, missing or ineffective fasteners, or insecure latch. (Trailer - 38-393.70(c), Driveaway -38-393.71)

NOTE: A fastener is not considered missing if there is an empty hole in the device but no corresponding hole in the frame and vice versa.

(2) Cracks anywhere in the pintle hook assembly including mounting surface and frame cross member. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(3) Any welded repairs to the pintle hook assembly. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(4) Section reduction visible when coupled.

NOTE: No part of the horn should have any section reduced by more than 20 percent. If wear can be seen when the hook and eye are coupled it is probable that either this condition or that described below in "d. (4)" exists. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

d. Drawbar Eye

Mounting and integrity.

(1) Any cracks in attachment welds or drawbar eye. (trailer - 38-393.70(c), Driveaway - 38-393.71)

(2) Any missing or ineffective fasteners. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(3) Any welded repairs to the drawbar eye. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(4) Section reduction visible when coupled.

NOTE: No part of the eye should have any section reduced by more than 20 percent. If wear can be seen when the hook and eye are coupled, it is probable that either this condition or that described above in "c. (4)" exists. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

e. Drawbar/Tongue
(1) Slider (power/manual).
(a) Ineffective latching mechanism. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(b) Missing or ineffective stop. (Trailer-38-393.70(c), Driveaway - 38-393.71)

(c) Movement of more than 1/4 inch between slider and housing. (Trailer 3-393.70(c), Driveaway - 38-393.71)

(d) Any leaking air or hydraulic cylinders, hoses, or chambers (other than slight oil weeping normal with hydraulic seals). (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(2) Integrity.
(a) Any cracks. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

(b) Movement of 1/4 inch between sub frame and drawbar at point of attachment. (Trailer - 38-393.70(c), Driveaway - 38-393.71)

f. Safety Devices
(1) Missing (38-393.70(c))

(2) Unattached or incapable of secure attachment. (38-393.70(c))

(3) Improper repairs to chains and hooks including welding, wire, small bolts, rope & tape. (38-393.70(c))

g. Saddle mounts
(1) Any missing or ineffective fasteners. (38-393.71)

(2) Loose mountings. (38-393.71)

(3) Any cracks or breaks in a stress or load-bearing member. (38-393.71)

(4) Horizontal movement between upper & lower saddle mount halves exceeds 1/4 inch (6mm). (38-393.71)

h. Full Trailer (Double Ring, Ball-Bearing Turntable)
(1) Mounting Top and Bottom
(a) Top flange has less than 7 effective bolts. (38-393.70(c))

(b) Bottom flange has less than 7 effective bolts. (38-393.70(c))

(c) Twenty percent or more of original welds (or repaired original welds), or parent metal cracked. (38-393.70(c))

(2) Wear (See illustration below).
(a) Upper flange half touching lower flange half. (38-393.70(c))

(b) Cracked flanges. (38-393.70(c))

3. Exhaust System

(a) Any exhaust system leaking at a point forward of or directly below the driver/sleeper compartment and when the floor pan is in such condition as to permit entry of exhaust fumes. (38-393.83(e))

(b) Any bus exhaust system leaking or discharging under the chassis more than 6 inches forward of the rear most part of the bus when powered by a gasoline engine, or more than 15 inches forward of the rear most part of the bus when powered by other than a gasoline engine. (38-393.83(d))

(c) No part of the exhaust system of any motor vehicle shall be so located as to be likely to result in burning, charring, or damaging the electrical wiring, the fuel supply, or any combustible part of the motor vehicle. (38-393.83(a))

4. Frame

a. Frame Members
(1) Any cracked, loose, sagging, or broken frame member permitting shifting of the body onto moving parts or other condition indicating an imminent collapse of the frame. (Bus, truck, truck tractor - 38-393.201(a), Trailers - 38-396.3(a)(1))

(2) Any cracked, loose, or broken frame member adversely affecting support of functional components such as steering gear, fifth wheel, engine, transmission, body parts, and suspension. (Bus, truck, truck tractor - 38-393.201(a), Trailers - 38-396.3(a)(1))

(3) One and one-half inches or longer crack in frame web which is directed toward bottom flange. (Bus, truck, truck tractor - 38-393.201(a), Trailers - 38-396.3(a)(1))

(4) Any crack extending from the frame web around the radius and into the bottom flange. (Bus, truck, truck tractor - 38-393.201(a), Trailers - 38-396.3(a)(1))

(5) One inch or longer crack in bottom flange. (Bus, truck, truck tractor - 38-393.201(a), Trailers - 38-396.3(a)(1))

NOTE: Items (1) and (2) above, apply to all buses including those having unitized (Monocoque) construction. (3) Items, (4) and (5) apply only to buses having a body-on-chassis design, such as most school buses.

b. Tire and Wheel Clearance

Any condition, including loading that causes the body or frame to be in contact with a tire or any part of the wheel assemblies, at the time of inspection. (38-396.3(a)(1))

c. Adjustable Axle
(1) Adjustable axle assembly (sliding sub frame) with more than one-fourth of the locking pins missing or not engaged. (38-393.207(b))

(2) Locking bar not closed or not in the locked position. (38-393.207(b)

5. Fuel System

a. Liquid Fuels
(1) A fuel system with a dripping leak at any point (including refrigeration or heater fuel systems). (38-393.67)

(2) A fuel tank not securely attached to the vehicle

NOTE: Some fuel tanks use spring or rubber bushings to permit movement. (38-393.65)

6. Headlamps, Tail Lamps, Lamps on Projecting Loads, Stop Lamps and Turn Signals

a. When lights are required
(1) Headlamps - The single vehicle or towing vehicle does not have at least one head lamp operative on low beam. (38-393.24(b)), (38-393.17), (38-393.9-inoperable)

(2) Lamps on Rear - Bus, truck, truck tractor, and towed vehicle (including driveaway/ towaway operation) not having at least one steady burning tail lamp on the rear of the rear most vehicle visible from 500 feet. (38-393.25(b)), (38-393.9-inoperable)

(3) Lamps on Projecting Loads - There is not at least one operative steady burning lamp on the rear of loads projecting more than four feet beyond the vehicle body, visible from 500 feet. (38-393.11), (38-393.17), (38-393.9-inoperable)

b. At Anytime - Day or Night
(1) Does not have at least one operative stop lamp on the rear of a single unit vehicle or the rear of the rear most vehicle of a combination of vehicles visible at 500 feet. (38-393.25(f)), (38-393.17), (38-393.9 - inoperable)

(2) Does not have operative turn signal visible on each side of the rear of a single unit vehicle or the rear of the rear most vehicle of a combination of vehicles. (Truck tractors unless the turn signals on the front are so constructed (double faced) and located as to be visible to passing drivers, two turn signals on the rear of the cab, one at each side.). (38-393.9-inoperable), (38-393.11-missing)

7. Safe Loading/Tie Downs

a. Part(s) of a vehicle or condition of loading such that the spare tire or any part of the load, cargo or dunnage can fall onto the roadway. (38-392.9)

b. When the aggregate working load limit of the securement devices being used is less than half the weight of the cargo being secured. (38-393.106(d))

NOTE: Equivalent means of securement (e.g., vehicle structures, dunnage, dunnage bags, shoring bars, etc.) may be used to comply; not all cargo must be "tied down" with chains, webbing, wire rope, cordage, etc. (38-393.106(b))

c. No edge protection. (38-393.104(f)(5))

NOTE: Out-of-Service only when the required tie down has evidence of damage resulting from an unprotected contact with an article of cargo.

NOTE: See sections 7(h)

(1) through 7(h)(5) for tie down defect classification.

d. Articles of cargo that are likely to roll are not restrained by chocks, wedges, a cradle or other equivalent means to prevent rolling. (38-393.106(c)(1)) for all types of cargo including light-weight vehicles, 38-393.130(a)for heavy vehicles, equipment and machinery.)

e. Articles or cargo placed beside each other and secured by transverse tie-downs are not in direct contact with each other and are not prevented from shifting towards each other while in transit. (38-393.106(c)(2))

f. Articles or cargo not blocked or positioned to prevent movement in the forward direction by a headerboad, bulkhead, other cargo that is positioned to prevent movement, or other appropriate blocking devices, is not secured by at least:
(1) One tie-down for articles 5 feet (1.5m) or less in length, and 1,100 pounds (500kg) in weight (38-393.110(b)(1));

(2) Two tie-downs if the article is:
(a) 5 feet (1.5m) or less in length and more than 1,100 pounds in weight (38-393.110(b)(2)(i);or

(b) Longer than 5 feet (1.5m) but less than or equal to 10 feet (3m) in length, irrespective of the weight. (38-393.110(b)(2)(ii))

(3) Two tie-downs if the article is longer than 10 feet (3) and one additional tie-down for every 10 feet (3m) of article length, or fraction thereof, beyond the first 10 feet (3m) of length. (38-393.110(b)(3))

g. Article(s) or cargo that is blocked, braced, or immobilized to prevent movement in the forward position by a headerboard, bulkhead, other articles which are adequately secured or by an appropriate blocking or immobilization method, is not secured by at least one tie-down for every 10 feet (3) of article length, or fraction thereof. (38-393.110)

h. When any of the required type and number of tie-downs are defective or loose. (38-393.104(b)- Defective, 38-393.104(f)- Loose)
(1) Chain Defects
(a) Broken, cracked, twisted, bent, or stretched links. (38-393.104(b))

(b) Containing nicks, gouges, abrasions, excessive wear, or knots. (38-393.104)

(c) Any weld(s) on chain, except the original chain weld in each link. (38-393.104(f)(2))

NOTE: Repairs. Links of the clevis variety, having a strength equal to or greater than the nominal chain are acceptable (See also Tie-Down Guidelines.)

(2) Wire Rope Defects.
(a) Kinks, bird caging, or popped core or knots in the working section of the wire rope. (38-393.104(b), 38-393.104(f)(1))

(b) Discoloration from excessive heat or electric arc in the eye or main body of the wire rope. (38-393.104(b))

(c) Corrosion with pitting of the external or internal wires. (38-393.104(b))

(d) More than 11 broken wires in 6 diameters of length. For example, with 1/2 inch (13mm) wire rope, over 11 broken wires in (6x1/2) 3 inches of length (6x13=78mm). (38-393.104(b))

(e) More than three broken wires in any one strand. (38-393.104(b))

(f) More than two broken wires at the end connection or fitting. (38-393.104(b))

NOTE: Repairs. Wire rope used in tie-down assemblies shall not be repaired or spliced. (Back splices and eye splices are acceptable.)

(3) Cordage (fiber rope) Defects
(a) Burned or melted fibers except on heat-sealed ends. (38-393.104(b))

(b) Evidence of excessive wear in exterior or interior fibers. (38-393.104(b))

(c) Any evidence of loss of strength, such as a marked reduction in diameter. (38-393.104(b))

(d) Ineffective knots formed for the purpose of connecting or repairing binders. (38-393.104(f)(1))

* NOTE: Effective diameter of the cordage reduced by 20 percent is excessive. Repairs: Cordage used in tie-down assemblies shall not be repaired. (Separate lengths of cordage properly spliced together are not considered repairs.)

(4) Synthetic Webbing Defects.
(a) The tie-down contains cut(s), burn(s), and/or hole(s) through the webbing which total more than that shown in the defect classification table. (38-393.104(b))

(b) The tie-down contains separation its load carrying stitch pattern(s) in excess of 1/4 of the total stitch area. (38-393.104(b))

(c) The tie-down contains any fitting, tensioning device, or hardware which is broken, obviously sprung, bent, twisted, or contains visible cracks or significant nicks or gouges. (38-393.104(b))

(d) The tie-down contains knotted webbing splices, repairs, or any other apparent defects (i.e., crushed areas, damaged loop ends, severe abrasion, etc.) (38-393.104(f)(2))

DEFECT CLASSIFICATION TABLE

Total Defect Size

Web Size

Out-of-Service Range

Inches (mm)

Inches (mm)

4(100)

Larger than 3/4(19)

3( 75)

Larger than 5/8(16)

2( 50)

Larger than 3/8(10)

1.75( 45)

Larger than 3/8(10)

All cuts, burns, and/or holes through the webbing are additive across the width of the strap face for its entire effective length. But only one defect is additive for any specific width.

NOTE: Repairs: Webbing used in tiedown assemblies shall not be repaired or spliced.

(5) Fittings or Attachment Defects.
(a) Obvious reduction of section through wear or corrosion. (38-393.104(b))

(b) Obviously distorted or stretched load binders and fittings. (38-393.104(b))

(c) Hooks opened in the throat beyond the original parallel throat opening. (38-393.104(b))

(d) Obvious twisting out of the plane of the fitting. (38-393.104(b))

(e) Welding or discoloration from excessive heat. (38-393.104(b))

NOTE: Some winches are designed to be welded to the truck bed.

(f) Any visible cracks. (38-393.104(b))

(g) Any slippage detectable at a wire rope "cable clamp". (38-393.104(f)(2))

NOTE: End fittings may be replaced with clevis type.

(6) Anchor Point Defects
(a) Broken or cracked side or pocket rails, supports, or welds. (38-393.104(c))

(b) Rails bent or distorted where hooks or fittings attach. (38-393.104(c))

(c) Floor rings nicked, gouged, worn, twisted, bent, stretched, or with broken welds. (38-393.104(c))

(d) Logs not secured per the specific securement requirements for this commodity type. (38-393.116)

(e) Dressed lumber or similar building products not secured per the specific securement of requirements for this commodity type. (38-393.118)

(f) Automobiles, light trucks and vans not secured per the specific securement requirements for this commodity type. (38-393.128)

(g) Heavy vehicles, equipment and machinery not secured per the specific securement requirements for this commodity type. (38-393.130)

8. Steering Mechanism

a. Steering Wheel Free Play.

(See Chart: When any of these values - inch movement or degrees - are met or exceeded, vehicle shall be placed out- of-service.) (38-393.209(b)) (For power steering systems, engine must be running.)

Steering Wheel Diameter

Manual System Movement 30°

Power System Movement 45°

16"(41cm)

4-1/2"(11.5cm)(or more)

6-3/4"(17cm)(or more)

18"(46cm)

4-3/4"(12cm)(or more)

7-1/8"(18cm)(or more)

19"(48cm)

5" (13cm)(or more)

7-1/2"(19cm)(or more)

20"(51cm)

5-1/4"(13cm)(or more)

7-7/8"(20cm)(or more)

21"(53cm)

5-1/2"(14cm)(or more)

8-1/4"(21cm)(or more)

22"(56cm)

5-3/4"(15cm)(or more)

8-5/8"(22cm)(or more)

For power systems, if steering wheel movement exceeds 45 degrees before steering axle tires move, proceed as follows: rock steering wheel left to right between points of power steering valve resistance. If that motion exceeds 30 degrees (or the inch movement values shown for manual steering) vehicle shall be placed out-of-service.

b. Steering Column
(1) Any absence or looseness of U-bolt(s) or positioning part(s). (38-393.209(c))

(2) Worn, faulty, or obviously repair-welded universal joint(s). (38-393.209(d))

(3) Steering wheel not properly secured. (38-393.209(a))

c. Front Axle Beam and All Steering Components other than Steering Column (Including Hub)
(1) Any crack(s). (38-396.3(a)(1))

(2) Any obvious welded repair(s). (38-396.3(a)(1))

d. Steering Gear Box
(1) Any mounting bolt(s) loose or missing. (38-393.209(d))

(2) Any crack(s) in gear box or mounting brackets. (38-393.209(d))

(3) Any obvious welded repair(s). (38-393.209(d))

(4) Any looseness of the pitman arm on the steering gear output shaft. (38-393.209(d))

e. Pitman Arm
(1) Any looseness of pitman arm on the steering gear output shaft. (38-393.209(d))

(2) Any obvious welded repair(s). (38-396.3(a)(1))

f. Power Steering

Auxiliary power assist cylinder loose. (38-393.209(e))

g. Ball and Socket
(1) Any movement under steering load of a stud nut. (38-396.3(a)(1)

(2) Any motion, other than rotational, between any linkage member and its attachment point of more than 1/8 inch (3mm) measured with hand pressure only. (38-396.3(a)(1))

(3) Any obvious welded repair(s). (38-396.3(a)(1))

h. Tie Rods and Drag
(1) Loose clamp(s) or clamp bolt(s) on tie rods or drag links. (38-396.3(a)(1))

(2) Any looseness in any threaded joint. (38-396.3(a)(1))

i. Nuts

Loose or missing on tie rods, pitman arm, drag link, steering arm, or tie rod arm. (38-396.3(a)(1))

j. Steering System

Any modification or other condition that interferes with free movement of any steering component. (38-393.209(d))

k. C-Dolly
(1) Missing or inoperable steering locks. (38-396.3(a))

(2) Steering not centered in the "zero" locked position. (38-396.3(a))

9. Suspension

a. Axle Parts/Members
(1) Any U-bolt(s) or other spring to axle clamp bolt(s) cracked, broken, loose, or missing. (38-393.207(a))

(2) Any spring hanger(s), or other axle positioning part(s) cracked, broken, loose, or missing resulting in shifting of an axle from its normal position. (38-393.207(a))

NOTE: After a turn, lateral axle displacement is normal with some suspensions. Forward or rearward operation in a straight line will cause the axle to return to alignment.

b. Spring Assembly
(1) One-fourth or more of the leaves in any spring assembly broken. (38-393.207(c))

(2) Any leaf or portion of any leaf in any spring assembly is missing or separated. (38-393.207(c))

(3) Any broken main leaf in a leaf spring. (38-393.207(c))

NOTES:

1. Any leaf of a leaf spring assembly is a main leaf if it extends, at both ends, to or beyond:
a. The load bearing surface of a spring hanger or equalizer.

b. The spring end cap or insulator box mounted on the axle.

c. A spring eye, further: Any leaf of a helper spring assembly is a helper main leaf if it extends, at both ends, to or beyond the load bearing surface of its contact pad, hanger, or equalizer.

2. The radius rod leaf, in springs having such a leaf, has the same function as the torque or radius components referenced in item 9.d "Torque, Radius, or Tracking Components" and should be treated as such a component for purposes of out-of-service. (38-393.207(c))

(4) Coil spring broken. (38-393.207(d))

(5) Rubber spring missing. (38-393.207(a))

(6) One or more leaves displaced in a manner that could result in contact with a tire, rim, brake drum, or frame. (38-393.207(c))

(7) Broken torsion bar spring in torsion bar suspension. (38-393.207(e))

(8) Deflated air suspension, (i.e., system failure, leak, etc), (38-393.207(f))

c. Composite Trailer
(1) If a crack extends beyond 3/4 the length of the spring, or if cracks, regardless of length, are visible on either side, and the top or bottom of the spring. (38-393.207(c))

NOTE: A crack is a separation in any axis which passes completely through the spring.

d. Torque, Radius, or Tracking Components

Any part of a torque, radius, or tracking or Tracking Components. component assembly or any part used for attaching same to the vehicle frame or axle that is cracked, loose, broken, or missing (including spring leaves used as a radius or torque rods, missing bushings but not loose bushings in torque or track rods).(38-393.207(a))

10. Tires

a. Any Tire On Any Steering Axle of a Power Unit
(1) With less than 2/32 inch tread when measured in any two adjacent major tread grooves at any location on the tire. (38-393.75(b))

(2) When any part of the breaker strip or casing ply is showing in the tread. (38-393.75(a))

(3) When sidewall is cut, worn, or damaged to the extent the ply cord is exposed. (38-393.75(a))

(4) Labeled "Not For Highway Use" or carrying other markings which would exclude use on steering axles. (38-396.3(a)(1))

NOTE: Tires on implements of husbandry and special off-road equipment may be marked "Not For Highway Use" or "Farm Use Only". Out-of-service is not applicable if used on highway for short distances at restricted speeds.

(5) Visually observable bump, bulge, or knot apparently related to tread or sidewall separation. (38-393.3(a)(1))

EXCEPTION: A bulge due to a section repair is allowed not to exceed 3/8"' (1cm) in height. This bulge may sometimes be identified by a blue triangular label in the immediate vicinity.

(6) Tire is flat or has noticeable (e.g., can be heard or felt) leak. (38-393.75(a)(3))

(7) So mounted or inflated that it comes in contact with any part of the vehicle. (38-396.3(a)(1))

(8) Steering Axle: Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure. (38-393.75(f))

b. All tires other than those found on the steering axle of a powered vehicle
(1) Tire is flat or has noticeable (e.g., can be heard or felt) leak. 38-393.75(a)(3))

(2) Bias Ply Tire: When more than one ply is exposed in the tread area or sidewall or when the exposed area of the top ply exceeds 2 square inches. NOTE: For single tire, one tire must meet this condition. On dual wheels, both tires must meet this condition. (38-393.75(a)(1))

(3) Radial Ply Tire: When two or more plies are exposed in the tread area or damaged cords are evident in the sidewall or when the exposed area exceeds 2 square inches (13 sq. cm) in the sidewall. NOTE: For single tire, one tire must meet this condition. On dual wheels, each tire must meet this condition. (38-393.75(a)(1))

(4) Any tire with visually observable bump or than those found knot apparently related to tread or sidewall on the steering separation. (38-396.3(a)(1))

EXCEPTION: A bulge due to a section repair vehicle. is allowed not to exceed 3/8"' (1cm) in height. The bulge may sometimes be identified by a blue triangular label in the immediate vicinity.

(5) So mounted or inflated that it comes in contact with any part of the vehicle. (This includes any tire contacting its mate in a dual set). (38-396.3(a)(1))

(6) Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure. (38-393.75(f)(1) and (2))

(7) So worn that less than 1/32 inch tread remains when measured in any two adjacent major tread grooves at 3 separate locations on the tire. EXCEPTION: On dual tires, both tires must have less than 1/32 inch tread. (38-393.75(c))

(8) 75 percent or more of the tread width loose or missing in excess of 12 inches (30 cm) in circumference. (38-396.3(a)(1))

11. Van and Open-Top Trailer Bodies

a. Upper Rail
(1) Broken with complete separation of the flange. (38-396.3(a)(1))

(2) Buckled or cracked when accompanied by missing, working (movement under stress) or loose fasteners at adjacent roof bows and/or side posts. (38-396.3(a)(1))

(3) Buckled or cracked when accompanied by broken, ineffective, or missing adjacent roof bows. (38-396.3(a)(1))

b. Lower Rail
(1) Broken with complete separation in the bay area accompanied by sagging floor, rail, or crossmember; or broken with loose, working (movement under stress) or missing fasteners at side posts adjacent to the crack. (38-396.3(a)(1))

NOTE: The lower rail of a van or open-top trailer can become gouged, chunked, or bent during operation. These are superficial damages only and do little to degrade the rail's strength or integrity.

(2) Drop frame trailers showing twists, bends, or fatigue cracking at the drop frame's elevation changes. (38-396.3(a)(1))

c. Floor Crossmembers
(1) Three or more adjacent broken, and/or completely detached from and sagging below the lower rail in the bay area. (38-396.3(a)(1))

(2) Broken floor accompanied by protruding freight and sagging crossmembers. (38-396.3(a)(1))

d. Side panels on fiberglass reinforced plywood (FRP) trailers

Damage in the bay area that penetrates completely through the fiberglass and plywood resulting in a sagging lower rail. (38-396.3(a)(1))

GENERAL NOTES: These notes apply to every portion (a, b, c, and d) of item 11.

(a) These conditions are only considered out-of-service if the failure is in the bay area (aft of kingpin coupler plate and forward of the axle sub frame rails)

(b) Trailers 30 feet or less in length have a short bay area and are not as susceptible to catastrophic failures; therefore, only rail breaks accompanied by a sagging floor, rail, or cross-member are out-of-service for them.

(c) Rail, post, bow, crossmember, and side/front panel damage in areas outside the bay area are not imminently hazardous and should not be considered out-of-service unless they lead to conditions described in other sections of the out-of-service criteria, (i.e., "10.a(7) Tires.")

12. Wheels and Rims

a. Lock or Side Ring

Bent, broken, cracked, improperly seated, sprung, or mismatched ring(s) (38-393.205(a))

b. Rim Cracks

Any circumferential crack except an intentional manufactured crack at a valve stem hole. (38-393.205(a))

c. Disc Wheel Cracks
(1) Any single crack 3"' or more in length.

(2) A crack extending between any two holes including hand holes, stud holes, and center hole.

(3) Two or more cracks any place on the wheel. (38-393.205(a))

(4) Stud holes (disc wheels). 50 percent or more longated stud holes (fasteners tight). (38-393.205(b))

d. Stud Holes (Disc Wheels)

Fifty percent or more elongated stud holes (fasteners tight). (38-393.205(b))

e. Spoke Wheel Cracks
(1) Two or more cracks more than 1 inch long across a spoke or hub section. (38-393.205(a))

(2) Two or more web areas with cracks. 38-393.205(a))

f. Tubeless Demountable Adapter Cracks

Cracks at three or more spokes. (38-393.205(a))

g. Fasteners

Loose, missing, broken, cracked, or stripped (both spoke and disc wheels) ineffective as follows: for 10 fastener positions - 3 anywhere, 2 adjacent; for 8 fastener positions or less (including spoke wheels and hub bolts) - 2 anywhere. (38-393.205(c))

h. Welds
(1) Any cracks in welds attaching disc heel disc to rim. (38-393.205(a))

(2) Any crack in welds attaching tubeless demountable rim to adapter. (38-393.205(a))

(3) Any welded repair on aluminum wheel(s) on a steering axle. (38-396.3(a)(1))

(4) Any welded repair other than disc to rim attachment on steel disc wheel(s) mounted on the steering axle. (38-396.3(a)(1))

13. Windshield Wipers

Any power unit that has an inoperative wiper or missing or damaged parts that render it ineffective on the driver's side. (Applicable only in inclement weather requiring use of windshield wipers. (38-393.78)

Disclaimer: These regulations may not be the most recent version. South Carolina may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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