My mum got caught doing 36 in a 30 limit, on a road which a week beforehand had been a 40 limit. She took a speed awareness course, and the leader asked 'So, if there's a gap that's only just big enough to fit your car through, what do you do?'
One woman replied 'Oh, I just close my eyes and hope for the best!'.
And that folks, is why I hate both driving and riding my bike on the road.