CAUTION TRIPPING HAZARD

On the way to my favorite bookshop in the neighbouring prefecture. I went there in my father's car and he always likes using the motorway (not for free). Captured this at a motorway service area on the way. 

Motorway service areas, which we simply call service areas, seem to be in use in the UK and Ireland as well. How they are used also looks similar, like recharging, resting, eating and drinking, shopping and using the toilet. I never went one while I was in the UK, and I'd like to try one to see how they look.