What is the visibility mnemonic for foggy days in Subject 4?
3 Answers
Driving mnemonic: Turn on fog lights, reduce speed, and maintain sufficient distance between vehicles. Precautions for driving in fog: 1. Control speed: When visibility is between 200 and 500 meters, speed should be kept below 80 km/h; when visibility is between 100 and 200 meters, speed should be kept below 60 km/h, etc. 2. Take decisive action: If a traffic accident occurs in foggy conditions, if you can leave the scene immediately, you should evacuate the accident site promptly and avoid lingering in the foggy area. If evacuation is not possible, turn on the vehicle's hazard warning lights, width markers, etc., and place warning signs more than 150 meters in the direction of oncoming traffic to alert other drivers.
I remember the visibility mnemonic for foggy conditions in Subject 4 was '261, 145, 520'—this thing was a huge help when learning to drive. It outlines driving rules for different visibility levels in fog: '261' means when visibility is below 200 meters, speed must not exceed 60 km/h, and you should keep a distance of over 100 meters from the car ahead; '145' means visibility below 100 meters limits speed to 40 km/h with a minimum gap of 50 meters; '520' means if visibility drops below 50 meters, reduce speed to under 20 km/h and quickly find a safe place to stop. Having driven for over a decade, I often use this mnemonic in heavy fog to control my speed while turning on fog lights and hazard lights to alert other drivers and avoid rear-end collisions. The rhyme is easy to remember, but the key lies in action—don’t risk speed for safety. Driving in fog requires extra caution.
I'm currently taking my driver's license test, and for Subject 4, I memorized this foggy weather mnemonic: '261, 145, 520'. It teaches how to control speed and distance in foggy conditions: 261 means when visibility is below 200 meters, drive under 60 km/h and keep 100 meters from the car ahead; 145 means when visibility is below 100 meters, drive under 40 km/h and keep 50 meters; 520 means when visibility is below 50 meters, reduce speed to under 20 km/h and try to stop as soon as possible. During practice, I treated it like a catchy rhyme and combined it with examples from the textbook, like how foggy conditions with blurred vision can easily lead to accidents, and sticking to the mnemonic can help pass the test safely. On the actual road, I also learned to check the weather forecast in advance and minimize trips when the fog is heavy, making my review more effective.
