Yes
Since you didn't say what the vehicle is or isn't doing, I can not answer.
No, Hydroplaning is not safe, because when a vehicle is in this condition, there is a "cushion" of water between the tires and the road limiting traction allowing the vehicle to skid out of control.
Approximately 6 inches of moving water can cause most vehicles to float. It is important to avoid driving through standing or moving water on roadways as it can be deeper or more powerful than it appears.
To convert inches of mercury to inches of water, you can use the conversion factor of 1 inch of mercury = 13.6 inches of water. Therefore, 29.92 inches of mercury is equal to 29.92 x 13.6 = 407.552 inches of water.
I dont think there is a set amount, it only takes enough water for one or more tires to lose traction with the road.
The EPC on a Jetta is the electronic powertrain control system. This is the traction system of the vehicle that detects if you are on ice or water covered roadways.
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
The heater control valve (HCV) is a very important component to a vehicle's water cooling and climate control systems. The HCV itself for this application can be found inline to the heater core lines.
35 inches of water is equivalent to approximately 1.27 psi. This can be calculated by dividing the height of the water column (35 inches) by the conversion factor (27.71 inches of water column per psi).
It is a good idea to have water with you. What happens if your vehicle breaks down and you have no water?
Hydroplaning is when water builds up under your tires and the rubber loses contact with the road surface, and you have no control over the vehicle. Ease off of the accelerator pedal until you regain control.