Speaking as someone who has recently passed their test (I passed the theory some time in September, and the practical in November), I feel qualified to post! I didn't get a question on level crossings on my theory test, but as the above poster says, the questions are randomly generated. However, on the practical side it wasn't covered either. I did some checking, there are quite a few level crossings around me (although saying that, I have never been across that many...) I can forgive them that as the routes are chosen at random as well, and I may just have got a route without a crossing. Although, I didn't get even get lessons on them whilst learning! I don't think it was covered in Pass Plus either... Although, I only took 8 driving lessons at 1hr each, so there may not have been time!