Answer:
It is also called traffic congestion ,This is coined out of situation why long line of vehicles on a road have stopped moving or are moving very slowly.
Step-by-step explanation:
This normally occur when cars or vehicle are line up on the road without or moving slowly . it usually caused by accident or careless driving on the road .It also have negative impact on the drivers such as stress or major damage to the vehicles ,injuries to driver and passenger or death.