User:Melkom/Bus

Numbering Scheme
In Frankfurt, city bus services are assigned a two-digit number. To avoid confusion with the tram services that are also designated with two-digit numbers, the range of numbers for tram services is 11 – 21, while the lowest number for bus service is 24. The 20s numbers were reserved for trams until the 1990s when the 29 bus service was created. These two-digit numbers do not follow any particular rule, except for the practice of giving bus service in the northern neighborhoods of Frankfurt a 2X number and services in the west a 5X number. Regional bus services are affected by the numbering scheme of the regional transit authority Rhein-Main-Verkehrsverbund and are assigned three-digit numbers.

Before 1940 only tram services used two-digit numbers. The current numbering scheme was created in 1940 to replace the then existing alphabetic denotation (A–P and Z). Some bus services still carry their original number (54, 55, 58, 59, 60, 61, 63), others were given new numbers when lower numbers became available from discontinued tram services.