How many meters should the warning triangle be placed behind the car?

2 Answers
StJoanna
07/28/25 8:34pm
On regular roads, the warning sign should be placed 50 to 100 meters behind the vehicle. At night or during rainy or foggy weather, the distance should be increased to over 200 meters. Here are the relevant details: 1. Purpose: The warning triangle in a car is used to alert following vehicles that there is a vehicle ahead with a malfunction or accident, prompting them to take caution and avoid it. 2. Operational standards: If a motor vehicle breaks down or is involved in a traffic accident on the road, obstructing traffic and making it difficult to move, the hazard warning lights should be turned on as required, and a warning sign should be placed 50 to 100 meters behind the vehicle. At night, the position lights and tail lights should also be turned on simultaneously.
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DiValeria
08/12/25 1:20am
A while ago, my car broke down on the highway, so I quickly took out the triangular warning sign and placed it at least 100 meters behind the car. Why so far? Because on the highway, vehicles are moving at high speeds, and at least 100 meters is needed to ensure they have enough reaction time. At a speed of 80 km/h, the emergency braking distance is roughly 60 meters. Factoring in reaction time and blind spots, placing the sign over 100 meters away significantly reduces the risk of rear-end collisions. The spot where I placed it was a straight section of the road, and after setting it up, I double-checked—the reflective markings were clearly visible, which made me feel much safer. If it had been raining or foggy, I would have placed it 150 meters away and also turned on the hazard warning lights inside the car. Remember to place the sign on the right side of the lane or the hard shoulder, and avoid stopping in blind spots. Safe driving starts with these small details—never cut corners, because once something goes wrong, regret comes too late.
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