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Driver's Ed : Signal, Signs,
and Road Markings Boosted Exam With Questions and Answers what do traffic signs, signals, and road markings control? - - flow of traffic who overrules traffic signals? - -police officers traffic lights hung vertically - -red - top yellow - middle green - bottom traffic lights hung horizontally - -red - left yellow - middle green- right red light - -a motorist must stop before the intersection or crosswalk until the light changes to green yellow light - -signal is changing from green to red, gives the motorist a chance to stop safely green light - -motorist should proceed through intersection, yield to pedestrians and vehicles still in the intersection when turning left or right green arrow - -can be shown alone or in combination with the red light, only proceed when arrow is shown yellow flashing light - -slow down and proceed with care flashing red light - -stop, yield to pedestrians, only go when safe, flashing red lights at railroads means a train is coming (yield to trains), go when lights stop flashing and when all other active warning devices deactivate
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