Changes

*[[Thinking Distance]]**The [[Human Reaction Time|reaction time]] of the driver - The longer the [[Human Reaction Time|reaction time]] the longer the [[Thinking Distance|thinking distance]] . This is affected by [[Alcohol (Biology)|alcohol]], [[drug]]s and therefore '''stopping distance'''tiredness.*[[Braking Distance]]**The conditions of the road and tyres - The less [[friction]] between the road and tyres the longer the [[Braking Distance|braking distance]] and therefore '''stopping distance'''.**The condition of the brakes, if they are in poor condition there will not be enough [[friction]].**The [[mass]] of the car. The mass a car has the more [[force]] is required to slow it down so brakes providing a constant [[force]] won't be as effective. ''Higher: See [[Inertial Mass]]''.**[[Weather]] conditions - Ice reduces friction with the road making braking distance longer.