Sideswipe Accidents: Lane Change Collisions Explained

Sideswipe accidents happen when two vehicles traveling in the same direction make contact along their sides, most often during a lane change or merge. While these crashes sometimes cause only minor vehicle damage, they can also send a vehicle spinning into other lanes of traffic or off the road entirely, leading to a more serious secondary collision.

Common Causes of Sideswipe Accidents

Most sideswipe accidents trace back to a driver failing to check their mirrors and blind spot before changing lanes, misjudging the speed or position of a vehicle in an adjacent lane, or drifting due to distraction or drowsiness. Merging traffic at highway on-ramps is a particularly common setting for these crashes, since drivers often merge under time pressure while managing multiple traffic streams at once.

Determining Fault in a Sideswipe Collision

In most states, the driver who was changing lanes or merging carries the primary responsibility for confirming the lane is clear before moving, which means fault often falls on the merging driver by default. However, if the other driver was speeding, driving in a blind spot longer than necessary, or failed to react to an obviously unsafe merge, fault can be shared between both drivers.

Evidence in Sideswipe Accident Claims

Because sideswipe accidents often come down to a dispute over which driver drifted into the other's lane, evidence such as the location and pattern of vehicle damage, dashcam footage, witness statements, and traffic camera recordings plays an outsized role in resolving these claims. Paint transfer and scrape direction on both vehicles can sometimes help establish which vehicle was moving into the other's path.

Secondary Collisions After a Sideswipe

A sideswipe impact can push a vehicle into another lane, into a guardrail, or off the roadway entirely, sometimes triggering a second, more damaging collision. When this happens, both the original sideswipe and any resulting secondary crash are typically evaluated together in determining the full scope of liability and damages.

Sideswipe accidents may look minor at first glance, but the resulting chain of events, along with the fault disputes they tend to generate, can make them more complicated than they initially appear.