I'm not suggesting that people should treat a level crossing like a give way junction and slow to a virtual halt, but simply to quickly look side to side.
It's something I've done for many years and it paid dividends when I was driving trucks as you soon learn to look for all those blind spots where car drivers, motor bikers and cyclist's will place themselves assuming they have right of way over trucks.
If you "up your game" with being observant, you'd be suprised just how much extra road and time you have to react with. As much as 80% of advanced motorist training is about observation and anticipation. Only 20% of the training is about vehicle handling.