Final answer:
When stopping on a one-way or divided highway, you should place a warning device at least 200 feet behind your vehicle to alert other drivers.
Step-by-step explanation:
When stopping on a one-way or divided highway, you should place a warning device at least 200 feet behind your vehicle. This warning device can be a reflective triangle or flares that alert other drivers of your presence. It is important to place the warning device far enough behind your vehicle so that other drivers have enough time to see it and adjust their speed accordingly.