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Traffic guards use a variety of equipment: [1] Signal flags. Signal hand sign; called stop/slow paddles in the United States, these are a sign that has 'stop' on one side and 'slow' or 'go' on the other side.
The stop sign is retroreflective and equipped either with red blinking lights above and below the stop legend or with a legend that is illuminated by LEDs. Unlike a normal stop sign, this sign indicates a two-way absolute stop, requiring other vehicles travelling in both directions to remain stopped until the sign is retracted. [citation needed]
The usual equipment of a marshaller is a reflective safety vest, a helmet with acoustic earmuffs, and gloves or marshalling wands – handheld illuminated beacons. At airports, the marshaller signals the pilot to keep turning, slow down, stop, and shut down engines, leading the aircraft to its parking stand or to the runway.
Build an intersection with long red lights and more drivers will race through on a yellow. Build a road with multiple 12-foot-wide lanes and generous shoulders, and then post a 25-mph speed limit ...
The red light means that the vehicle facing the traffic light must come to a complete stop. A green light means that the vehicle facing the traffic light may proceed when it is safe to do so. A yellow light indicates that a red light will follow, and vehicle drivers must stop if it is safe to do so. Flashing beacons are flashing signals.
Signs including Stop, Yield, No Turns, No Trucks, No Parking, No Stopping, Minimum Speed, Right Turn Only, Do Not Enter, Weight Limit, and Speed Limit are considered regulatory signs. Some have special shapes, such as the octagon for the Stop sign, the triangle for the Yield sign, and the crossbuck for railroad crossings.
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