Collisions are more likely to happen when:

Collisions are more likely to happen when one driver moves faster or slower than the other vehicles on the road. Driving faster than other traffic increases your chance of being involved in a collision. Driving more slowly than other traffic is also dangerous because it can increase the risk of a rear-end collision with your vehicle or cause other drivers to swerve to avoid hitting you.

• All vehicles are traveling at about the same speed.
• One lane of traffic is traveling faster than the other lanes.
• One vehicle is traveling faster or slower than the flow of traffic.