What is the maximum speed limit on icy and snowy roads?

[MackenzieDella]

The maximum speed on icy and snowy roads should not exceed 30km/h. Below are precautions for driving on icy and snowy roads: 1. Before driving on icy or snowy roads, carefully inspect the tread wear of the car tires. The tire tread patterns must be clearly visible, and the wear conditions of all tires should be roughly the same. Check the tire pressure to ensure it strictly complies with the standard. 2. Also, inspect the performance of the steering, transmission, and braking systems to ensure they are reliable. Specifically, conduct a braking test on the road to check if all wheels can be braked simultaneously and measure the braking distance of the car on icy or snowy roads. 3. When starting on icy or snowy roads, the drive wheels are prone to slipping and spinning. If snow chains are not installed, you can use the clutch semi-engagement method and gently press the accelerator pedal to attempt starting. Alternatively, you can use a gear one level higher than the normal starting gear, slowly release the clutch pedal, and moderately press the accelerator pedal. This allows the engine to output minimal power without stalling, reducing the torque on the drive wheels to adapt to the lower traction of icy and snowy roads, ensuring a smooth start.

[Sophie]

I know this all too well. Last winter, I almost had an accident due to black ice on a long-distance drive. On icy or snowy roads, you absolutely cannot drive at the normal speed limit—traffic laws clearly state not to exceed 30 km/h. The key is to assess real-time conditions: 40 km/h might be manageable during light snowfall, but when encountering compacted ice or long downhill stretches, even 20 km/h requires full concentration. Three crucial reminders: maintain three times the usual following distance, avoid sudden steering movements, and learn to brake with gentle taps. Keeping a shovel and snow chains in the car is practical, especially for mountain roads. Remember, even if the car behind flashes its lights urging you to speed up, don’t—getting home safely is what matters most.

[VonJosephine]

Driving on icy roads is like walking on thin ice; every 10 km/h increase in speed doubles the danger. I usually test the brakes first: lightly tap them on a flat road. If the ABS kicks in immediately or the tires feel like they're slipping, it's time to slow down. Once after a snowfall, I saw a five-car pileup on the highway—all because speed wasn't kept in check. Don’t rely too much on four-wheel drive; even those can slide on black ice. It’s advisable to activate snow mode and defog the windshield in advance. Maintain at least a 50-meter following distance, and when you see brake lights ahead, gently apply the brakes. Keep a bag of cat litter in your car for emergencies—sprinkling it under the tires can help you get unstuck if you're stuck.

[MacTravis]

Attention, new drivers! Do not exceed 30km/h on icy or snowy roads. Reduce speed to below 15 before turning and steer with small wheel angles. The most dangerous spots are bridges and shaded areas, where black ice may form. Experienced drivers observe road reflections: a white sheen indicates packed snow requiring caution, while gray-black patches may signal thin ice demanding slow passage. Before morning drives, tap your wipers—forcing frozen blades can burn out the motor. Never manually break ice off mirrors; use defrosters or alcohol spray instead. Remember: low-speed crawling outweighs any driving technique.

[PhoebeLynn]

From a physics perspective: The friction coefficient of icy surfaces is only 1/5 of dry roads. Stopping from 40km/h requires over 45 meters, which is five times the normal distance! The speedometer is even more deceptive than actual grip. Vehicles with winter tires can maintain around 40km/h, while those with regular tires must stay below 30km/h. For every 5° increase in slope, speed should be reduced by 5km/h. When going downhill, using engine braking in low gear is the most stable approach. Slow down in advance when seeing "Bridge Icy" warning signs. Snow spray kicked up by preceding vehicles can instantly reduce visibility – in such situations, turn on fog lights and reduce speed.

[LillianMarie]

From a liability perspective, speeding on icy roads is akin to playing with your life. Last year, a friend received a full liability ticket for speeding in snowy conditions, and the insurance didn't cover it. I always check the 'Road Ice Warning' app before driving. Three life-saving principles: Allow an extra hour beyond the estimated navigation time; hold the steering wheel at the nine o'clock position for constant minor adjustments; clear all snow from the rear window. On long steep slopes, following the tracks of large trucks is safest—their tires crush the ice layer, improving traction. Avoid using cruise control and keep your right foot lightly on the throttle, ready to release at any moment.