§ 3112. Traffic-control signals.
(a) General rule.--Whenever traffic is controlled by traffic-control signals exhibiting different
colored lights, or colored lighted arrows, successively one at a time or in combination, only the colors
green, red and yellow shall be used, except for special pedestrian signals carrying a word legend, and
the lights shall indicate and apply to drivers of vehicles and pedestrians as follows:
(1) Green indication.--
(i) Vehicular traffic facing a circular green signal may proceed
straight through or turn right or left unless a sign at such place prohibits either such turn
except that vehicular traffic, including vehicles turning right or left, shall yield the rightof-
way to other vehicles and to pedestrians lawfully within the intersection or an adjacent
crosswalk at the time the signal is exhibited.
(ii) Vehicular traffic facing a green arrow signal, shown alone or in
combination with another indication, may enter the intersection only to make the
movement indicated by the arrow, or such other movement as is permitted by other
indications shown at the same time. Such vehicular traffic shall yield the right-of-way to
pedestrians lawfully within an adjacent crosswalk and to other traffic lawfully using the
intersection.
(iii) Unless otherwise directed by a pedestrian-control signal as
provided in section 3113 (relating to pedestrian-control signals), pedestrians facing any
green signal may proceed across the roadway within a crosswalk.
(2) Steady yellow indication.--
(i) Vehicular traffic facing a steady yellow signal is thereby warned
that the related green indication is being terminated or that a red indication will be
exhibited immediately thereafter.
(ii) Unless otherwise directed by a pedestrian-control signal as
provided in section 3113, pedestrians facing a steady yellow signal are thereby advised
that there is insufficient time to cross the roadway before a red indication is shown and no
pedestrian shall then start to cross the roadway.
(3) Steady red indication.--
(i) Vehicular traffic facing a steady red signal alone shall stop at a
clearly marked stop line, or if none, before entering the crosswalk on the near side of the
intersection, or if none, then before entering the intersection and shall remain standing
until an indication to proceed is shown except as provided in subparagraph (ii).
(ii) Unless signing is in place prohibiting a turn, vehicular traffic
facing a steady red signal may enter the intersection to turn right, or to turn left from a
one-way highway onto a one-way highway after stopping as required by subparagraph (i).
Such vehicular traffic shall yield the right-of-way to pedestrians lawfully within an
adjacent crosswalk and to other traffic lawfully using the intersection.
(iii) Unless otherwise directed by a pedestrian-control signal as
provided in section 3113, pedestrians facing a steady red signal alone shall not enter the
roadway.
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