Can a vehicle hydroplane at B mph?

Yes, a vehicle can hydroplane at B mph, depending on several factors such as tire tread depth, water depth on the road, and the vehicle's weight. Hydroplaning occurs when a layer of water prevents direct contact between the tires and the road surface, which can happen at speeds as low as 30 mph in certain conditions. The specific speed at which hydroplaning begins can vary, so it's important for drivers to be cautious in wet conditions.