On Sun, 10 Nov 2013 21:58:11 +0000, gremlin_95
wrote:

On 10/11/2013 18:12, Adrian wrote:
On Sun, 10 Nov 2013 17:32:21 +0000, SteveW wrote:

Indeed we allow 44 (or is it 48 now) ton trucks to travel at 56,
knowing they haven't a hope in hell of matching a car's stopping
distance.
http://www.youtube.com/watch?v=ridS396W2BY

Quite impressive. I travel by bus to get to work and the journey
involves a lot of NSL A-roads, I was quite impressed how quickly and
smoothly the buses come to a complete stop when going down hill at full
pelt (56-62mph). The auto box seems to drop down gears as it slows down
to increase the braking effect.

I don't know if they caught on but, about 30 years back, I was on a
bus that was fitted with a magnetic arrester device. The braking, even
from the device alone, was breathtaking.