West Mercia Police Superintendent Matt Mead, in an article in the Shropshire Star, wrote:
West Mercia police patrols will be supporting this campaign by taking a hard line against those drivers who flout the law.
Being distracted by loud music, a phone conversation or text message means you will react later than you could/should to what is happening around you and take longer to begin braking.
People who become distracted while they are driving are more likely to fail to notice road signs and find themselves tailgating, and find it difficult to maintain a steady speed or proper lane position.
They also tend to begin braking later placing vulnerable road users, particularly pedestrians, at high risk of injury.
The underlined text was corrected so as to increase accuracy, relevancy, and safety value.
If you're distracted, you may actually have your foot on the accelerator when you should be covering the brake pedal. (Since I have an automatic transmission, my left foot is ALWAYS covering the brake pedal.)
Even if you're just cruising, under the posted speed 'limit' - let's say 30 MpH; I'm from New York - but not covering the brake pedal, distracted, your chances of unintentionally noticing that you just struck someone at 29MpH go way up. You broke Rule #1, but you weren't speeding, so you must not be at fault for permanently changing the life of the pedestrian who was either not paying attention, or adamant about crossing despite the red hand (international DON'T WALK sign) in their face. Nevermind that impact speed only equaled traveling speed because of a failure on the driver to pay attention to what they were supposed to be doing. All apologies, and the Amerikan health insurance system sucks.
Or ...
You could be doing 45Mph in the 30MpH zone that is midtown Manhattan - strongly recommended against, but rarely possible - moving your head and eyes like you're paranoid. Should the need arise, you do not waste an inch of brake pedal, make your car do a nosestand, and come to a complete stop ... while the pedestrian might've even fled the potential point of impact because they heard you braking desperately and/or noticed your car doing a nosestand and realized they should do their part to avoid breaking Rule #1.
In two seconds, a car traveling 29MpH = 85 Feet. From the moment the brake is depressed to a complete stop, a moderately roadworthy car will finish an emergency stop from 45MpH in less than 85 feet. Middle fingers and epithets are exchanged, KSI
avoided.
If we take the more likely tack of a very mildly distracted driver who takes an average amount of time to think and move their foot from the gas to the brake, you'd still find that they've wasted several precious yards if their feet weren't already on the brake, regardless of how fast they were going.
They may have also been hesitating - probably less than a second - unwilling to remove their foot from the go-pedal, hoping they could just keep going.
The other thing you may find is that most people can't even extract 70% of their car's peak braking performance once they do finally get their foot on the brake, much less 100%. Hello, Brake Assist.