This is the dramatic moment a furious wife chased her husband's car after spotting him leaving a motel with another lover, and attacked him in the front seat as traffic slowed.

Footage shows the woman running after the vehicle as it left the motor inn entrance in Salvador, Brazil, on November 4.

Her companion runs alongside her as the pair reaches the car amid heavy congestion on the busy avenue.

The video then shows them opening the driver's door to confront the man, while the alleged mistress escapes from the vehicle.

The car then moves forward, causing one of the women to fall onto the road as the clip ends.

People nearby can be heard shouting as the scene unfolds.

Local reports said there were no confirmed updates on the woman's condition following the fall.