A man is in a stable condition after he was hit and injured by a tram undergoing testing on Canberra's light rail tracks, about a month out from the network's planned start date.

An ACT government spokeswoman said initial investigations suggested the pedestrian had stepped in front of the light rail vehicle against a red signal while wearing headphones.

Emergency services at the scene of a collision between a tram and a pedestrian in Canberra on Saturday morning. Credit:Elesa Kurtz

Firefighters and paramedics responded to the incident, which happened at the intersection of Northbourne Avenue with Barry Drive and Cooyong Street, at 7.47am on Saturday.

An Emergency Services Agency spokesman said the man suffered upper body injuries and injuries to both legs.