Manual Stop/Start at the lights and junctions

[fazersharp]

On a vehicle where it's been designed to do it is one thing, all the various components will be designed to cope with the constant restarting, plus they have sensors/brains to detect when to not do it and let things recover.

Yep this is right.
When I can I filter to the front so never seem to wait long anyway after all I am filtering because the lights are red and there is a queue so by the time I am at the front the sequence is just about ready for green.
I am not convinced at all about start stop - when it starts there is a burst of extra fumes - Isn't there ? as opposed to gently ticking over. Also when on a downward hill in queuing traffic in the car I stay in neutral and let gravity do the work but with a stop start you can not do this as it stops when in neutral or is there sensors that know the wheels are turning otherwise without the enging you have no steering.