Where should reflectors be placed on a two-way undivided highway?

Reflectors on a two-way undivided highway play a crucial role in enhancing visibility, especially during low-light conditions or inclement weather. The correct answer specifies that reflectors should be placed 10 feet in front of the vehicle and 100 feet behind it, as well as 10 feet in front. This positioning helps to ensure that oncoming traffic can see the vehicle from a distance, allowing drivers to react appropriately and maintain safe distances.

Having reflectors placed 100 feet behind the vehicle is particularly important because it gives approaching vehicles ample time to notice the presence of a stationary or slow-moving vehicle, thereby reducing the risk of rear-end collisions. Meanwhile, positioning reflectors 10 feet in front alerts oncoming drivers to the presence of a vehicle ahead, both enhancing safety and fostering better communication about road status among drivers.

The other options either do not provide adequate distance for visibility or fail to adhere to standard reflective marker requirements that ensure safety on roadways. Properly placing reflectors in these specified locations is a key practice for all commercial drivers to follow for safe operations on undivided highways.