What must you do when parked at the side of the road at night?

When parked at the side of the road at night, activating your 4-way emergency flashers is crucial for safety. This action ensures that other drivers can easily see your vehicle, making them aware that it is parked and potentially obstructing the road. The 4-way flashers serve as a clear signal that you are not moving and that your vehicle may pose a hazard if another driver is not attentive.

While turning on parking lights and using taillights provide some visibility, they may not be sufficient to alert drivers from a distance, particularly at night in low visibility conditions. Emergency warning devices, such as reflective triangles or flares, should also be set out, but activating the 4-way flashers immediately increases visibility and alerts approaching vehicles that caution should be exercised. It is important for the overall safety of both the parked driver and other road users, making it the best choice in this situation.