On 2017\04\08 13:41, michael adams wrote:

Whereas in fact drivers should never find themselves in the position
where they're having to refuse take out trains as a direct result of slipshod
maintenance. As its their neck which will be on the line if anything goes
wrong.

That sounds like you're suggesting they'll be fired or disciplined if a
fault develops, when it's more that they will have a really horrific day
if a door opens unexpectedly and a few people fall off a moving tube
train. (Brake faults obviously do put the drivers neck on the line in a
literal sense.)