Arkansas Commercial Driver License (CDL) Practice Test

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For placement of a warning device on a curve, how far should it be placed behind the vehicle?

  1. 10-50 feet

  2. 50-100 feet

  3. 100-500 feet

  4. 500-1000 feet

The correct answer is: 100-500 feet

The correct distance for placing a warning device behind a vehicle on a curve is crucial for ensuring safety. When a vehicle is disabled or stationary on a roadway, particularly on a curve where visibility might be limited, a warning device such as a reflective triangle or cone signals approaching drivers to reduce their speed and prepare to navigate the area safely. The recommended distance of 100-500 feet provides ample notice for approaching vehicles, allowing drivers sufficient time to react and avoid potential collisions. This distance is particularly important on curves where drivers may not see the obstruction until they are very close, increasing the risk of accidents. By positioning the device further back, it gives drivers the necessary reaction time to respond appropriately. The other options suggest shorter or excessively long distances, which would either not provide enough warning for drivers in time or create unnecessary hazards by warning drivers too far away, leading to confusion regarding the nature of the obstruction and its proximity. Thus, the specified range of 100-500 feet ensures an effective balance of safety and clarity for approaching traffic.