New research shows that stress from commuting may linger long after people have gotten out of the car, and it can have a negative impact on the physical and psychological health of workers and their families In a recent study, researchers studying commuters found t driving under stressful conditions can actually cause or C high-blood pressure or stroke. Also, for some reason, th people seems to come out during traffic jams. They ge that they decide that the traffic laws don't apply to th the traffic, they start driving on the shoulder of the r lane where the traffic is moving the fastest.