B roads are numbered routes in Great Britain of lesser importance than

A road A roads may be *motorways or freeways, usually where the local word for motorway begins with A (for example, ''Autobahn'' in German; ''Autostrada'' in Italian). * main roads or highways, in a system where roads are graded A, B and sometimes lower c ...

s. See the article

Great Britain road numbering scheme The Great Britain road numbering scheme is a numbering scheme used to classify and identify all roads in Great Britain. Each road is given a single letter (which represents the road's category) and a subsequent number (between 1 and 4 digits). ...

for the rationale behind the numbers allocated.

B300 to B399

B3000 to B3099

B3100 to B3199

B3200 to B3299

B3300 to B3399

B3400 to B3499

Footnotes

References

{{DEFAULTSORT:B Roads In Zone 3 Of The Great Britain Numbering Scheme 3 3