They lock on, most modern artics can't coast in anyway. They breaks come on automatically to avoid runaway lorries due to handbrake or brake failure, I guess if the master cylinder failed it could end up being brakeless.
@chris_tim started
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They lock on, most modern artics can't coast in anyway. They breaks come on automatically to avoid runaway lorries due to handbrake or brake failure, I guess if the master cylinder failed it could end up being brakeless.