A new online simulator aims "to prove to drivers the dangers of being behind the wheel when travelling too fast, after drinking or when using a mobile phone," according to Britain's Royal Society for the Prevention of Accidents. " It shows how speed, weather and impairments dramatically affect stopping distances and result in crashes and pedestrian deaths. . . . But they can also see how using a mobile phone, alcohol or wet weather makes things more dangerous."
You can set your driving speed and various conditions and then see your results. To try it, head to: