Arkansas Commercial Driver License (CDL) Practice Test

The correct distance to place a warning device behind a vehicle on a one-way street is 100 feet. This measurement is important because it provides sufficient warning to oncoming traffic about the obstruction or hazard. By placing the warning device at this distance, you give other drivers adequate time to react and adjust their speed or change lanes to avoid a potential collision. This standard is part of ensuring safety on the roadways, particularly in situations where visibility may be limited or when vehicles are stopped or disabled. In contrast, shorter distances like 10 or 50 feet may not offer enough reaction time for other drivers, especially at higher speeds. Similarly, a distance of 150 feet may be unnecessary and could cause confusion among other road users, who might not expect a warning device that far back. Thus, 100 feet strikes a balance between being visible and providing adequate warning to maintain safe driving conditions.