> It's not speeding that injures people, it's the speed differences that cause issues. When two car are at a speed of 70mph, the maximum speed difference betwe

> It's not speeding that injures people, it's the speed differences that cause issues. When two car are at a speed of 70mph, the maximum speed difference between them is 140mph, when they are at 50mph, it's only 100mph. So the speed of a car has a direct impact on the speed difference between cars.