A quick fix is to paint a yellow box on the crossing so it is an offence to enter the box unless your exit is clear.You're too late. Union Road crossing already has a cross-hatched yellow paint job. . . didn't seem to help very much.
When two old dears are driving along and chatting 10 to the dozen and being oblivious to their surroundings, yes I know I'm being stereotypical... find themselves stationary in the traffic...on the crossing...then the bells start and a few seconds later the booms commence to lower.
In this time frame of less about 20 seconds after the realisation...there's very little time left for making any reasoned decision, consequently and sadly, most likely as most people would...they froze.