A driver caught on video the moment a car slammed into a road sign near the entry to the Bush Turnpike in Richardson.

Matt Morton was getting on the Bush Turnpike near North Jupiter and East Renner roads about 3:30 p.m. Saturday when the car in front of him swerved into the on-ramp lane then back into the other lane, KXAS-TV (NBC5) reported.

The driver struck a sign and the guard rail, spinning his car around.

Morton captured footage of the whole incident on his dash camera and posted it to Facebook. After the crash, Morton backed up and went to check on the man, who appeared to be uninjured.

It's unclear what caused the man to swerve.