Police advise delaying travel on M1 after three-car crash causes long delays south of Brisbane A THREE vehicle crash is causing traffic chaos on the M1 motorway in Brisbane's south today. Traffic was severely congested after the crash occurred in a southbound lane on the M1 in Rochedale South about 11am. A Queensland Police spokesman said no one had been injured in the crash but traffic had been severely affected. Police have recommended commuters delay travelling south on the motorway and to take an alternate route if possible. It was unknown how long the delays would take to clear.