The first British motorways were built without "breakdown lanes", which we call "hard shoulders". This was quickly corrected since the cars in common use at that time couldn't cope with constant high-speed running (no speed limit either back then), and the stationary cars were proving a major hazard to following traffic.
But British roads have a very simple lining scheme - if it's a dashed line, you can cross it, but if it's solid, you can't (except when using T or cross junctions, or in emergencies). The lines between lanes are dashed, and the ones by the central barrier and the hard shoulder are solid. More recently, the hard-shoulder line has even been made textured to warn drivers who stray over it.
But British roads have a very simple lining scheme - if it's a dashed line, you can cross it, but if it's solid, you can't (except when using T or cross junctions, or in emergencies). The lines between lanes are dashed, and the ones by the central barrier and the hard shoulder are solid. More recently, the hard-shoulder line has even been made textured to warn drivers who stray over it.


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