Failing to conform to red flashing lights at a level crossing is the same offence as failing to conform to a traffic light, which is eligible for a fixed penalty ticket £60 fine and 3 points. Upon conviction at magistrates court, it has a maximum fine of £1000 and 3 points.
I have to say I think that this is entirely wrong, and sends out the wrong message. Most motorists would consider jumping a red traffic signal to be entirely trivial, and the receipt of an FPN and three points or attending an awareness course is doubtless considered little more than a nuisance by most. The potential consequences of ignoring a level crossing are so much more severe, and the legal position really ought to show this. Treating both offences the same is merely 'dumbing down' the very serious issue of misusing level crossings. This should be a separate offence of it's own, carrying a high fine (£1,000 minimum) and six points.