Bad drivers often cause accidents because of unexpected maneuvers made without signaling their intentions. However, experienced defensive drivers can read the intentions of other motorists in some situations by picking up on certain cues. Here are five of them: Turning the head before a lane change. Before driving beside a car in a multilane highway, watch the driver’s head. Drivers about to change lanes often turn their head to the left to check their blind spot. If this happens, allow the driver into the lane. Rapidly approaching a car from.