Tram station
From Halopedia, the Halo wiki
Tram Station is a term used for the station for the tram system on Cairo Station. The Tram Station is located on the far side of Cairo Station just near Starboard Shipping. All officers and personnel use the tram system to get around Cairo Station faster. You, as Master Chief use it on the level Cairo Station in Halo 2 before the actual level begins. The reason for the brief usage was to attend an awards ceromony with Seargent Johnson and Miranda Keyes.