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What is a key reason for being cautious when driving on bridges during winter?

  1. Bridges are more slippery

  2. They are often closed to traffic

  3. Road signs are less visible

  4. Traffic lights are not functioning properly

The correct answer is: Bridges are more slippery

Bridges are often more slippery than regular roadways during winter conditions due to their unique structure. Unlike traditional roads that are insulated by the surrounding ground, bridges are exposed to air both above and below. This can result in bridges freezing faster than other surfaces when temperatures drop, leading to icy patches that may not form on roadways. Drivers should be particularly cautious because this can create hazardous driving conditions, increasing the likelihood of losing traction and control. Being aware of this characteristic can help ensure a safer driving experience when approaching bridges in winter.