not at all high. 1/2 inch or even less can hydroplane a car. all it means is that the vehicles tires are not spreading the water out or shedding it away from under the tire and is instead riding on top of it due to speed and condition of the tire. Once the car is riding on top of the film of water control is compromised and braking ability diminished.
A car can hydroplane, essentially glide on water
When I am in my car and it is raining I might hydroplane.
Remove you foot from the accelerator, hang on to the steering wheel, do not apply the brakes, do not turn the steering wheel, and pray. If your car is in a "hydroplane", you should: -Ease off the accelerator
no
Only if the grating is submerged under a couple of inches of water.
A car traveling over 45 mph can hydroplane with about 1/10th of an inch of water on the road.
A car traveling over 45 mph can hydroplane with about 1/10th of an inch of water on the road.
6 inches of water No 6 inches of water can cause you to loose traction and hydroplane but 24 inches of water is needed to actually float the car
Yes, they definitely can.
A small, light car with small tyres. The tyres and their ability to clear water are the biggest factor, the weight of the vehicle defines the rubber 'footprint' on the roadway.
Quite easily, often in much less. It depends on the speed, weight of the vehicle, type and condition of the tyres.
Hydroplaning or aquaplaning can occur on standing water - the car tires surf on the water and lose their grip with the road. When a car starts to hydroplane the driver may feel a tug on the steering wheel, the steering will then feel very light (as the tires have no contact with the road). If ever you find yourself in a hydroplane NEVER attempt to steer or brake as this will cause you to lose control. The only safe way to deal with it is to remove your foot from the accelerator and let the car slow down. As it does the tires will reconnect with the road.