BRUTAL ROAD RUNDOWN
Frightening moment on a Texas road ... two cyclists were knocked off their bikes and run over by a car ... and it's all on video.
The horrifying footage -- captured on Monday -- shows the cyclists pedaling hard in the right lane of a road just outside of the Dallas-Fort Worth International Airport ... when a white SUV comes up from behind and rams into them, knocking them off their bikes.
One biker gets knocked off their bike entirely and goes toppling to the ground .