The point at which vehicles must stop at a
signalized intersection during the red phase is
typically indicated by a stop line pavement marking
upstream of the signal head. However, the
appearance of the traffic signals and the geometry
of the intersection provide additional context clues
as to the stop location of the first vehicle in the stop
queue. In some cases, these context clues are not
present, and the STOP HERE ON RED SIGNAL sign
(Rb-78) is used instead to provide supplementary
guidance on where drivers must stop.
signalized intersection during the red phase is
typically indicated by a stop line pavement marking
upstream of the signal head. However, the
appearance of the traffic signals and the geometry
of the intersection provide additional context clues
as to the stop location of the first vehicle in the stop
queue. In some cases, these context clues are not
present, and the STOP HERE ON RED SIGNAL sign
(Rb-78) is used instead to provide supplementary
guidance on where drivers must stop.