What's good of Highways and Trucks?

Japanese Highway Network, most of which is managed by JH(Japanese Highway something or other), charged, is, generally speaking, well-appointed and also getting better now. Most of automobiles Which goes long-distance runs on Highways, because sometimes the condition of roads out of Highway is not good, we can expect that automobiles which run on Highways will be a fast and long-running one. Also, In the Service Areas(SA) and Parking Areas(PA) on the Japanese Highway Network, cars on up line and those on down line are separated, then we can find the car which will pick us up.
On the other hand, because trucks often run more long distance than other cars, and they run regularly, it is more easy to suppose when they runs, where they stop and stay,where is their destination. And also, truck drivers are comparatively kind to hitchhikers.