On a bus stop feature tagged highway=bus_stop, add the tag =yes if a trolleybus (electric bus powered by overhead wires) stops at the feature.
Sometimes =no is used at a stop where it might be expected that a trolleybus would stop, but it does not. For example, if there is a regular bus and a trolleybus on the same street, but only the regular buses stop at that bus stop.
See Also
bus=* - access tag for large buses including trolleybuses. Sometimes also used to specify that buses stop at a certain location.
psv=* - access tag for public service vehicles, usually including all types of buses, minibuses and shared taxis (jitneys)
