The other day I was overtaken by a white transit type van on an open road, no surprise there as I am not a speed merchant and it seemed totally acceptable to overtake. I was traveling at 50mph and he/she was doing much faster than that. Anyway something prompted me to look up the class of vehicle and to my surprise I found out that transit van type vehicles should not exceed 50 mph on single carriageway and 60 mph on a dual carriageway.

You learn something every day eh?