Motorists can expect significant southbound delays on the M7 at Cecil Hills following a serious two car accident near Elizabeth Drive.
Both southbound lanes remain closed with southbound motorists using the breakdown lane to pass the accident site.
Southbound traffic remains very heavy and is queued nine kilometres back to Old Wallgrove Road.
Northbound traffic is also heavy approaching the accident site as motorists slow down to pass the scene.
Emergency services and the Crash Investigation Unit are on site.
Motorists are advised to allow plenty of additional travel time and expect significant delays.
For the latest traffic information, visit www.livetraffic.com or call 132 701.