Half a minute, we have got several AHB where we watch the full sequence including cars crossing, yellow lights, red lights through to barriers dropping, quite un-nerving the first few times at 90mph, they are not down for 30 seconds before we get there, its more like 10 seconds.
Quite right - apologies, to be clear, I was referring to the whole sequence from the amber road lights first illuminating to train arriving (which should be 27 (?) seconds for a train at line speed) rather than the time that the barriers are actually down (as you say, a matter of seconds - not a problem if the crossing is being used correctly, but not providing a lot of incentive for misuse either!)
Exactly right, not forgetting that they will want the barriers down and signals cleared before the train gets to the distant.
Indeed - I think that's where we (as an industry, rather than any individual) could do better sometimes. In some places, the workload is such that the Signalman has no choice but to lower the barriers 'too early', or leave them down between trains when he might otherwise have been able to at least clear some traffic, so that he can focus his attention elsewhere.
On the other hand, the method of working at one busy crossing around here, right on the end of a platform, was changed - stopping passengers used to come in on a delayed yellow with the barriers raised. That was changed a few years ago, to allow them to come in under clear signals (leading to the barriers being down for the best part of five or six minutes), not because of the risk of overrun (stopping passengers can still come in on the delayed yellow if the forward section's still occupied) but because the timetable wasn't working. I know we're all here to run trains not cars, but an extra half minute on the approach to the station in question wouldn't be the end of the world...!