One thing that one is rarely aware of, as far as braking distances are concerned, is that, quite often, one can stop in much shorter distance that we even think. The actual stopping distance of a modern car on a dry road is very short indeed, and we almost never use that capacity in normal driving (which is a good thing of course).
I mean, for example, suppose you find yourself, by inadvertance, with an obstacle in front of you (eg a car maneuvering at an crossing), closer thant the distance you are used to start braking at.
You will probably think you are too close to stop, while actually there is more than enough distance for maximum braking.
Now you think "God I'm gonna hit"!, and that is the beginning of panic. I imagine several consequences can happen:
- slamming the brakes and locking the wheels: now ABS prevents that, but there are still some cars around that do not have ABS. I almost rear-ended a car some years ago, in such a situation (the traffic on the motorway was so calm I let my attention drift, getting a bit close to the car in front and reacting late when, suddenly, everybody braked to a halt...), and I only avoided the accident because I had recently practiced emergency braking, and realized at the critical moment, after locking the wheels, that I had to unlock them to try stopping in time - with the wheels locked I would have hit
- getting paralyzed with fear and doing nothing. Everybody realizes the consequences... (I've often heard that many accidents happen with drivers under-reacting...)
Of course, in a descent on a wet road, the stopping distances will go up and will surprise many people.
For all these reasons, I think that just practicing from time to time stopping in a short distance in various situations can only be beneficial and transform many "emergency situations" that often end up badly into situations that simply demand quick action (that is, without even changing the timing, speeds, and positions of the vehicles involved).
What do you think?