Viscount Goschen (Con)

My Lords, I do not have any argument with the Government over their laudable environmental and other objectives in bringing forward these regulations, but I have a question that is really to do with the physics of the matter. We know that kinetic energy is a key, or perhaps the key, determinant in the severity of and damage caused by road accidents. Kinetic energy is of course calculated as half of the mass times the square of the velocity. Essentially, if, as I understand it, the Government are content that it is safe for a category B licence holder to drive a 4.25 tonne vehicle powered by zero-emissions means, why is it not safe for that same driver to drive another vehicle powered by any other means? In the event of a road accident or collision, the power source of the vehicle the category B driver is at the wheel of will make no difference to the brakes and tyres, and to the impact caused to the other vehicle involved in the accident. When we are legislating on road safety, we have to take into account the realities and physics of the matter as well as other government objectives, such as decarbonisation, laudable though they may be. I would be very grateful if the Minister could answer that question.