Traffic Signs, Signals, and Road Markings

Identifying and interpreting the visual communication systems used on roadways to regulate, warn, and guide drivers safely to their destinations.

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In a work zone, a human flagger's instructions always override any traffic lights or posted signs.
A 'Divided Highway Ends' sign warns that two-way traffic is about to begin, meaning you must be aware of oncoming vehicles in the adjacent lane.
A legal crosswalk exists at any intersection where a sidewalk would extend across the street, even if no lines are painted on the road.
The unique, five-sided pentagon shape of a road sign is used exclusively to warn of a school zone, and it is often colored a fluorescent yellow-green for maximum visibility.
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