Since the end of the 1980s, route number 2 has no longer been used.

Within a short space of time, the route number was changed to 192.

For the time being these carried the route number 2.

The second generation of route numbers came into use in 1974.

The third generation of route numbers came into use in 2004, and is the system used at present.

These days a production can take any number of routes.

The route number 4 had been used three times prior to its current use.

The route number 105 had been used four times prior to its current use.

The route numbers of these bus are 42 and 43.

The route number 93 had been used five times prior to its current use.