Tramway Girder Rail
Although not specifically for O14 (or even for 7mm scale) I’m sure this Easy Street simulated tram girder rail produced by PROTO:87 STORES might find some use, as it will accommodate RP25 wheels.
Full details can be found here: http://www.proto87.com/Paved_industrial_or_dockside_track.html
and here: http://www.proto87.com/Street_track_for_trolleys_and_trams.html
Added March 24, 2010