What are the reasons for high-speed traffic jams?

There are many reasons for traffic jams in expressway. Here are some common reasons:

1. Car accident: Once a car accident happens in expressway, it will take up road resources and cause traffic jams.

2. Weather: Bad weather conditions, such as heavy rain, heavy snow and fog. , it will affect the driver's sight and speed, which will lead to traffic congestion.

3. Holidays: During holidays, people travel more, and the traffic volume will also increase, which is prone to traffic congestion.

4. Traffic accidents: Traffic accidents will lead to road congestion, because the scene of the accident needs to be cleaned and handled.

5. Vehicle failure: Vehicle failure can also lead to road congestion, because the faulty vehicle needs to wait for maintenance or trailer.