HLaB
Marie Attoinette Fan
In response to the OP, its perfectly legal to cycle on A roads but there are some you wouldn't want to, they are akin to motorways but there are others that are quieter than B roads, it where local knowledge comes to the fore. There are a few exceptions where bikes are banned by bylaws (it'll be signed) but you wouldn't want to cycle on those roads anyway. I tend to mostly use A roads to connect up quieter lanes and B roads it makes for a much more enjoyable cycle.