ACT Policing last night closed Lonsdale Street in Braddon for public safety concerns after reports of burnouts and dangerous driving during an unregulated car cruise.

Close to 7.50pm yesterday, police arrived after reports of dangerous driving combined with large numbers of people consuming alcohol and engaging in anti-social behaviour.

Police closed Lonsdale Street to traffic and the crowd and cruise dispersed.

Later in the night, police received reports of a large number of cars driving dangerously at the corner of Yallourn Street and Canberra Avenue in Fyshwick.

Police attended and parked their vehicle 100 metres away from the spectators, which was a short time later surrounded by spectators who threw items and verbally abused the officers.

Police activated  lights and sirens and the crowd and drivers dispersed. A spectator threw a bottle and smashed the rear window of the marked police vehicle.

At this stage no charges have been laid in relation to either incident.