When the vehicle to be passed is towing a trailer, has an open trunk lid, ice or snow on the rear window, or objects in the rear window, you should use extra caution when trying to pass.
A trailer refers to an unpowered vehicle whose towing is done by another vehicle.
It is usually utilized for the transport of goods and materials.
Sometimes recreational vehicles, travel trailers, or mobile homes. These come with limited living facilities. People can either camp or stay in these trailers.
Rear window is a mirror inside a car in that helps the driver to see what is happening at the back of car.
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