Show Us Trolleys Trams Subways Etc

Slovenia
Road Vehicles
2009: Trolleybus from Piran
2010: Trolleybus in Ljubljana

Iran
Public Transport
December 31, 2001
The stamp set depicts Tehran Metro.

United States
District of Columbia Bicentennial
September 7, 1991

Shows a two car streetcar train turning onto Pennsylvania Avenue with
the US Capitol in the distance.

Canada
June 30, 1982
Canada Day
Part of sheet of 12, picturing Montreal streetcar in a painting called
"Montreal Street Scene" by Adrien Hebert

Canada
August 19,1994
St. John Railway streetcar

some light rail from Russia 2022

Cuba
Tramways of Cuba
February 20, 2004
The stamp set shows trolleys in Santiago, Havana, Camaguey, Matanzas, Camaguey. The minisheet shows a tram lineup on Calzada de la Reina in Havana, along with bond and stock certificates and ticket and tokens.

Denmark
June 9, 1994
Trams of Denmark

Algeria
October 30, 2013

Tram in Oran

Moldova
2013

100 Years of Trams in Chisnau

Here is a Coventry Electric Tramway cover from 1904 with their 2d parcel label used as a railway fee stamp.

From Wiki: "On 6 March 1900 a tramway postal service was inaugurated, which continued until the end of tramway operation 40 years later. In latter days the postal car left Bedworth at 8.50pm, showing 'Postal Car' in red letters on the route indicator. The letter-box was fixed to the outside of the rear dash."