On Sun, 24 Jan 2016 14:56:30 -0000, Ken Blake wrote:

On Sat, 23 Jan 2016 19:07:54 -0700, Tony Hwang
wrote:

Mr Macaw wrote:
On Sat, 23 Jan 2016 23:36:04 -0000, tlvp wrote:

On Sat, 23 Jan 2016 20:16:49 -0000, Mr Macaw wrote, re seatbelts:

... nasty crashes ... since those don't happen often
(especially in town driving), there's no point in wearing one ...

... until just as a nasty crash takes place :-) . HTH. Cheers, -- tlvp

Can't, not at 30mph.

At 30mph, one cn get killed. Depends what the driver runs in to.

For example, if you have a head-on collision with another car going
30mph, that's a 60mph crash.

Oh no not another idiot who flunked physics. 30mph into an identical car doing 30mph in the opposite direction is the same, PRECISELY the same, as a 30mph car into an immovable concrete wall. You decelerate from 30mph to 0mph in the same time. Your kinetic energy loss is the same. The other car has the same kinetic energy, but that goes to damaging him, not you.

--
The remarkable thing about my mother is that for 30 years she served us nothing but leftovers. The original meal has never been found. -- Calvin Trillin