Quantcast Traffic Signal Lights

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FIGURE 9
FIGURE 8
Speed Limit Sign
Speed Limit Sign
They serve as a warning that construction work is
ahead and may indicate a speed limit through the
construction area. They may also warn that a flagman
is ahead.
Railroad Crossing Signs. Railroad crossing
h.
signs are usually of two types (Figure 13): a circular
sign with an "X" and the letters "RR," placed at some
distance from the railroad tracks, warns drivers that
the tracks are ahead; a sign made only of crossed bars
and bearing the words "Railroad Crossing" may be
placed immediately at the crossing.
9.2 TRAFFIC SIGNAL LIGHTS. Signal lights are used
to control traffic movement at intersections or
especially hazardous locations and to indicate traffic
l a n e s which may be used. They vary slightly in
different localities, but the colors usually indicate the
restriction or action described below.
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