On 15/12/2020 10:59, T i m wrote:
On Tue, 15 Dec 2020 10:24:22 +0000 (GMT), "Dave Plowman (News)"
wrote:

snip

I've not had a stop start vehicle, but my brother has. He says he can't
work out when it's going to work or not. Think I'd like a warning light
when it is in operation. He can disable it, but it reverts to on at the
next switch on.

Shirly if you come to a momentary halt and the engine stops, that
could (would?) create more pollution (stopping and starting any mass
needs to overcome inertia, linear or rotary) than just allowing it to
run a few more revs and not stop?

If it does, then there would be a finite time that an engine would
need to stop for before it actually made it cleaner ... and it's
possible that could be linked into a realtime GPS / traffic monitoring
system that allowed the car to know if you had stopped at traffic
lights (and how long they had on red on that cycle) or just in slow
moving traffic?

I think it *is* a good idea if all engines are cut off if left idling
for say 5 mins or more (unless in 'engineering mode') to stop all
those who park up, leave their headlights on and sit there talking /
eating for 20 mins with the engine running. ;-(

Something I come across surprisingly often when out walking the dog.

Cheers, T i m

so thats dogging then