Professional truck drivers know the ins and outs of local regions far more intimately than the rest of us. Driving upwards of 12 hours on end with short stops for food is a surefire way to get the lay of the land, for better or worse.
Which is to say, when you're spending that much time on the road, you're bound to come across some seedy towns that trigger your fight or flight.
If you're planning a road trip in the near future, and you want the 411 on which places to avoid, then look no further than this Reddit thread full of truckers sharing the small towns they refuse to stop in.
No human being should ever have to visit King's Lynn in Norfolk. The very shallowest end of the British gene-pool. All the local swamp-dwellers come in on Fridays and Saturdays to get drunk and fight. Entire villages have the same surname. Hellish place.