Utah CDL General Knowledge Practice Test

The placement of reflective triangles is critical for ensuring safety when a vehicle is parked on a level, straight, two-lane road. The correct answer emphasizes the need for clear visibility to approaching drivers.

By placing one triangle within 10 feet of the rear of the vehicle, it provides immediate warning to traffic that there is an obstruction or hazard ahead. The triangle set about 100 feet to the rear gives drivers sufficient notice as they approach, allowing them time to slow down or change lanes, which is especially important on roads where speed limits may be high. Lastly, placing one triangle about 100 feet in front of the vehicle helps to alert traffic coming from the opposite direction.

This arrangement ensures that all angles of approach are covered, giving ample warning and promoting safety. Each triangle's distance is designated to optimize visibility for drivers, allowing for safe navigation around the stopped vehicle. The chosen placement is in line with safety guidelines that aim to minimize the risk of accidents when vehicles are disabled or parked on the road.