Railroad Crossing SignThe sign is characterized by a large, yellow, circular emblem featuring a black 'X' and the letters 'RR', symbolizing a railroad crossing.
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Railroad Crossing SignThe sign is characterized by a large, yellow, circular emblem featuring a black 'X' and the letters 'RR', symbolizing a railroad crossing.
Trains may pass through any time of the day or night, so drivers must not stop on train tracks to avoid any potential collisions. Railroad crossing signs are a yellow circle, with the letters and symbol in black. This sign is found before the crossing of a railroad, and may be accompanied with pavement markings.
Warning. Warning signs typically use a yellow background with black letters or symbols to convey their purpose. Most warning signs are diamond-shaped and use symbols to indicate the nature of the potential hazard.
The purpose of a train symbol is simply to identify what each train is. In one way or another most train symbols will denote priority, commodity, origin location, destination location, and often date of origin.
A low-voltage electric current is sent between the two rails via a series of relays like the ones in this photo. When a train approaches, the current runs through the train's metal wheels and axles instead of the relays. This short circuit activates the crossing signal.
Reading Color Light SignalsGreen indicates clear, the train can proceed. Yellow indicates approach, but at a restricted speed. Be prepared to stop at the next signal. Red indicates stop, the block is currently occupied.