Connecticut Administrative Code
Title 16 - Public Service Companies
140 - Clearances on Railroads With Reference to Overhead and Side Structures and Parallel Tracks
Part II - Overhead Clearances
Section 16-140-6 - Side tracks

On all tracks except main line, passing siding or yard tracks, the minimum overhead clearance may be reduced to not less than sixteen feet six inches, provided all trains on such tracks shall come to a full stop before passing under a structure erected pursuant to this section, and provided the railroad company shall issue an operating rule forbidding any train employee or other employee from getting upon or working upon the roof of any railway car, caboose or locomotive of a train on such tracks when passing under a structure erected pursuant to this section.