The force of one car colliding with another in a large number of car accidents will set off a chain reaction. Multiple cars and people are injured in this sort of car accident. They can vary in size from three cars to hundreds of cars, and are often referred to as a pileup.

A multi-car crash is a frightening and perplexing experience. This form of car accident can happen in a variety of different ways.

• One vehicle slams into the back of the other. The car that was hit then rear-ends the vehicle in front of it. Although you might not always be able to avoid being rear-ended, you will always avoid rear-ending someone else by driving at reasonable speeds and stopping distances.
• Without testing their blindspot, a driver switches lanes. In an attempt to avoid being hit, the other driver may swerve or apply the brakes, causing them to collide with or be collided with by another vehicle.
• If two cars collide, one or both of them crash into traffic. Other vehicles are then drawn into the accident by cars that are still moving due to the impact force.

Both of these scenarios have the potential to be extremely dangerous. Drunk or distracted driving is a frequent cause of multi-car collisions. When there are bad weather conditions, such as snowy roads or poor visibility, it is not unusual to hear of multi-car pileups.