Geezertronic said:
Is it the responsibility of the driver (or the first driver of the day to drive the train) or is it the responsibility of the engineers onsite to check the mechanical condition of the train before it goes out?
At East Midlands Trains, drivers 'prep' HSTs before they leave the depot. Bombardier fitters 'prep' Meridians, as Bombardier are contracted to do the maintenance on them, and provide so many to be available for service each day.
The day headlight (on the right-hand side if looking out of the cab) is aligned to be seen by trackworkers at a distance, and is actually brighter than the night headlight (certainly on newer trains anyway) - think of a candle, it's easy to see in the dark, but hard to see in the day, especially from any kind of distance. The night headlight (on the left-hand side if looking out of the cab) is angled slightly down and to the left to pick out speed boards etc. Apart from signs picked out by the headlight you can't really see a lot at night, but the headlight's main function is for people to see you - after all, you don't really need to see where you're going, you're on rails and you'll go where they take you, but trackworkers and members of the public using footcrossings etc. need to see you coming.
On HSTs with original headlights there was a setting where you could have both on at once, and I think there had been an instruction at some point for both to be used. Eurostars have both left and right switched on if I recall.
Driving in fog, you'd use the day headlight if it's (foggy) daytime, and the night headlight if it's (foggy) night-time. There aren't any 'fog lights' like on road vehicles. If you feel the need to you can reduce speed, but it's actually easier to drive at the speed you normally do - you don't get lost then. I'll explain - every day you are accelerating and braking in the same places, the gradients are the same, the stations are in the same place - it's the same everyday pretty much. If you drive as you normally do, you can 'feel' your way in the fog. Count the signals (helped by the AWS bell or horn), watch the speedo rise and fall so you know when there's a certain gradient, listen for the sound of overbridges whooshing by - you hear and feel where you are. Of course you'd be crawling upto red signals though, although the AWS would help you there, but you need to know which signals have the AWS magnet located nearer to the signal than usual.
Basically you need to know your route thoroughly!