Ice, a solid line and a slow truck on the A-1 outside Taldykorgan
On the A-1 highway outside Taldykorgan in February, the posted limit is 90 km/h. Temperature is -10 °C, the asphalt is patchy ice, and light snow reduces visibility to about 250 m. You are driving a front-wheel-drive sedan with winter tyres and ABS. A loaded truck is 18 m ahead in your lane, travelling at 55 km/h and throwing up snow spray. Your fuel gauge shows a quarter tank, and the next settlement is 40 km away. You want to overtake before a gentle curve 300 m ahead. There is no oncoming traffic visible, but the road has a solid centre line for the next 150 m. Your passenger asks you to speed up to make time. You must decide whether to overtake, what following distance and speed are appropriate, and what to do if the truck suddenly brakes.
1. May you overtake the truck now? Explain the legal and safety reasons.
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No. The solid centre line forbids crossing it, and the gentle curve plus snow spray cuts the sight line. A 90 km/h sign is an upper limit for good conditions, not a target on patchy ice. At 55 km/h the truck is slower, but overtaking would require a long time in the opposite lane and a lane change across a solid line. Wait until the line becomes broken, the curve is behind you, and you can see the whole overtaking distance. The passenger's request does not change the legal or safety limit.
2. What following distance and speed are appropriate in these conditions?
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Reduce speed to a level where you can stop within the visible and controllable distance; on patchy ice that is well below 90 km/h. At 55 km/h, 18 m is only about 1.2 seconds of following distance, too short for ice. Aim for at least 4 seconds, roughly 60 m at that speed, and more if spray worsens. Use gentle steering and braking, keep the winter tyres at the correct pressure, and avoid cruise control on ice. Also plan fuel: a quarter tank with 40 km to the settlement is enough only if you do not detour or get stuck, so refuel at the first safe station.
3. The truck suddenly brakes. What is the correct sequence of actions?
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Lift off the accelerator and brake progressively; ABS will prevent wheel lock but does not shorten ice stopping distance. Do not swerve into the opposite lane where a solid line and poor visibility make a head-on collision likely. Leave extra space, switch on hazard lights if you slow sharply, and if you stop, place the warning triangle at least 30 m behind the car outside a settlement. Stay in the car with seat belts on if traffic is still moving, unless it is safer to stand behind the barrier.