Delaware Administrative Code
Title 2 - Transportation
2000 - Department of Transportation
2400 - Division of Transportation Solutions
2402 - Manual on Uniform Traffic Control Devices (MUTCD)
Part 2 - Signs
Chapter 2B - REGULATORY SIGNS, BARRICADES, AND GATES
Section 2B.63 - National Network Signs (R14-4, R14-5)

01 The signing of the National Network routes for trucking is optional.

Standard:

02 When a National Network route is signed, the National Network (R14-4) sign (see Figure 2B-30) shall be used.

Option:

03 The National Network Prohibition (R14-5) sign (see Figure 2B-30) may be used to identify routes, portions of routes, and ramps where trucks are prohibited. The R14-5 sign may also be used to mark the ends of designated routes.