1988 MUTCD Revision 4a (modified)
(Proposal to be effective on date of publication in the Federal Register)

Request VI-82(C) Quartz Timed Traffic Signal

On Page 79, Section 6F-8c. Temporary Traffic Signals
Revise the last paragraph to read as follows:

One-way traffic flow requires an all-red interval of sufficient duration for traffic to clear the portion of the temporary traffic control zone controlled by the traffic signals. To avoid the possibility of GREEN/GREEN conflict at each end of the temporary traffic control zone, the traffic signal shall be either hard-wired, controlled by radio signals, operated manually, or designed to employ other technology that will not allow conflicting signal displays. Whenever the distance between traffic signals is long or restricted, the use of conflict monitors or similar electronic technology that is typically used in traditional traffic signal operations should be considered.

TEXT CHANGE TO THE MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES DISCUSSED IN FINAL RULE DOCKET NO. 94-33

(SEE ATTACHED FEDERAL REGISTER)