Removal of Traffic Signals

Although the original installation of a traffic signal may be based on the satisfaction of one or more warrants and other factors, changes in traffic flow over time may reduce the effectiveness of traffic signal control. When this occurs, it may be appropriate to remove a traffic signal. The
TMUTCD
 provides the following guidance regarding the removal of traffic signals:
"If the engineering study indicates that the traffic control signal is no longer justified, and a decision is made to remove the signal, removal should be accomplished using the following steps:
  1. Determine the appropriate traffic control to be used after removal of the sign.
  2. Remove any sight distance restrictions as necessary.
  3. Inform the public of the removal study.
  4. Flash or cover the signal heads for a minimum of 90 days, and install the appropriate stop control or other traffic control devices.
Remove the signal if the engineering data collected during the removal study period confirms that the signal is no longer needed.”
Before determining to remove a traffic signal, keep in mind that it is possible that a signalized intersection that does not meet any of the warrants will meet at least one warrant after the signal is removed (due to increases in crashes, delay, or traffic patterns). Therefore, the removal of a traffic signal requires engineering judgment.
Due to the expense associated with the removal and possible re-installation of a traffic signal, the following steps should be followed prior to the removal of a traffic signal:
  1. The traffic signal should be placed in flashing operation reflecting two-way or multi-way stop control, as appropriate.
  2. If, after an extended period of flashing operation, intersection operation and safety is acceptable, the signal should be deactivated and STOP signs should be installed on the appropriate approaches. Signal deactivation can be accomplished by covering the signal heads, turning them face down, or removing the signal heads completely. Signal related signing should be removed from the intersection. The signal poles, mast arms, and span wire should be left in place.
  3. After an extended period of acceptable sign control operation, the signal poles, mast arms, and span wire should be removed.
TRF may be consulted for guidance when removal of a traffic signal is being considered.