Final answer:
When stopping on a one-way or divided highway, place the warning device on the right side of the vehicle to effectively alert other drivers approaching from behind.
Step-by-step explanation:
When stopping on a one-way or divided highway, you should place your warning device on the right side of the vehicle. This is typically done by activating the hazard lights or placing caution triangles or flares on the right side of the road behind your vehicle.
Placing the warning device on the left side, in front of the vehicle, or behind the vehicle will not effectively alert other drivers approaching from behind.