ALL lanes have now reopened and traffic is flowing on the M1 after today’s fatality.

A woman was killed after being hit by a semi-trailer about midday.

The crash happened near Coomera between exits 54 and 49.

Skid marks about 20m long can be seen on the road.

Police were working to move traffic past the crash but all four lanes were closed after the crash.

Emergency crews reopened all lanes at about 3pm.

media_camera Police at the scene of a fatal incident on the M1 at Coomera. Photo: Nicholas McElroy

Earlier today regional duty officer Inspector Mark Pengelly urged motorists to avoid the area.

“It’s going to be chaotic for the next few hours,” he said.

“Avoid the area if you can.”

He said the truck driver was the only witnesses to the incident.

media_camera The skid marks on the M1 at Coomera. Photo: Nicholas McElroy

However, other motorists on the scene after the crash stopped and tried to help the woman.

They have been taken from the scene and are being supported by police.

If you or anyone you know needs help call Lifeline on 13 11 14.

media_camera Four lanes of traffic have been closed on the M1 northbound after an incident near the Coomera exit. Photo: Channel 7 News.

EARLIER EMERGENCY services have closed all four lanes of the M1 northbound after a serious accident.

It is believed a pedestrian may have been hit by a truck.

Paramedics and police were called to the M1 at Coomera about midday to the scene between exits 54 and 49.

Traffic is banked up for several kilometres and long delays are expected. Motorists are urged to delay their trip or seek an alternative route.

media_camera The scene on the M1 after a pedestrian is believed to have been killed. Photo: Nicholas McElroy

A police spokesman said it was believed the four lanes would be closed for several hours and it was vital all motorists avoided the M1 northbound.

More information to come.

media_camera Four lanes of traffic have been closed on the M1 northbound after an incident near the Coomera exit. Photo: Channel 7 News.

media_camera The scene on the M1 after a pedestrian is believed to have been killed. Photo: Nicholas McElroy