1888 LAWS OF. MARYLAND. [CH. 1007

140. OBEDIENCE TO OFFICIAL TRAFFIC-CONTROL DEVICES.
(a) No driver of a vehicle or operator of a street car or track-
less trolley shall disobey the instructions of any official traffic-
control device placed in. accordance with the provisions of this
Article, unless at the time otherwise directed by a peace officer.

(b) Wherever any street car tracks enter upon or cross a
highway at a point where a traffic-control device directs
vehicles to stop, then the State Roads Commission or county
or municipal authorities under whose authority said traffic-
control device was erected, shall erect and maintain an official
traffic control signal to be operated at such hours as may be
deemed necessary by the public authority having jurisdiction
over traffic on any such highway; provided, that the company
operating over said street car tracks shall, upon demand prior
to installation, agree to pay one-half the cost of said traffic
control signal and one-half the cost of erecting same, but
should said company fail so to agree then said traffic control
signal need not be installed.

141. TRAFFIC-CONTROL SIGNAL LEGEND. Whenever traffic
is controlled by traffic-control signals exhibiting the words
"Go, " "Caution, " or "Stop, " or exhibiting different colored
lights successively one at a time the following colors only
shall be used and said terms and lights shall indicate as
follows:

(a) Green alone or "Go. "

(1) Vehicles facing the signal may proceed straight through
or turn right or left unless a sign at such place prohibits either
such turn. All vehicles shall yield the right-of-way to other
vehicles and to pedestrians lawfully within the intersection
at the time such signal is exhibited.

(2) Pedestrians facing the signal may proceed across the
roadway within any marked or unmarked crosswalk.

(b) Amber alone or "Caution" when shown following the
green or "Go" signal.

(1) Vehicles facing the signal shall stop before entering the
nearest crosswalk at the intersection, but if such stop cannot
be made in safety a vehicle may be driven cautiously through
the intersection.

(2) Pedestrians facing such signal are thereby advised that
there is insufficient time to cross the roadway, and any pedes-
trian then starting to cross shall yield the right of way to all
vehicles.

(e) Bed alone or "Stop. "