wazztie16
Member
It's usually when the handbrake is applied, then is taken off - so it does happen at traffic lights.
Then again, some other vehicles do it - like my car!
If there's a fault with the system, then it can cut out at traffic lights.
But it's meant to only cut out when the handbrake is on, and the doors have been opened.
Cutting out with just the handbrake on is very very rare, and usually results in the bus restarting itself within a couple of seconds.