At the traffic signal, if the track clearance green phase includes left-turning vehicles and there is through traffic on the opposite side of the intersection, include a left turn arrow for a protected left turn during preemption. The track clearance green phases should include both the through movement and protected left turn. Note: The protected left turn movement is not always used during normal operation (when traffic signal is not preempted).

Include battery backup at the

TSC

.

Use a minimum

12 color coded

conductor traffic signal cable between the railroad cabin and

the TSC

.

Include a label in the

TSC and railroad cabin

to alert technicians of the presence of railroad preemption circuits.

Traffic signal poles should not block view of railroad gates, mast flashers and cantilevers.

Care should be taken to restrict any vehicular movements towards the tracks when the traffic signal is in dwell or limited cycle phases. Restricted left turns or blank-out signs (i.e., No Left Turn) may assist.