|on_demand = yes|
|Indicates that a bus relation is only operating when there is a direct customer demand.|
|Group: public transport|
|Used on these elements|
|Status: in use|
|Tools for this tag|
Indicates that a bus route is only operated on direct customer demand. This is usually the case for rural areas or night buses that would see very little to no traffic would they operate on a fixed schedule.
Usage in Germany and Austria
In Germany and Austria, these services are often called "AST" (short for Anrufsammeltaxi), and customers need to book a ticket or phone the operator to have the line operate.