The truck will be able to move a fully laden B-double and will be based at the Emergency Transport Management Centre at Auburn.

This is in addition to the Traffic Commanders and 24-hour Traffic Emergency Patrol, which also operate from the centre to respond to incidents in Western Sydney.

NSW Premier Barry O'Farrell said the M4 is an important link in our motorway network and a major freight corridor, and is used by more than 100,000 vehicles every day.

"Anything which can help keep it moving will be welcomed by Western Sydney motorists,” Mr O’Farrell said.

“When a crash or major incident occurs, traffic can quickly bank up and cause delays for motorists so it’s important to have this kind of tow truck on hand during peak periods."

NSW Roads and Porst minister Duncan Gay said the tow truck is able to be deployed during the morning and afternoon peak hours.

“It will mean a faster and more efficient response to incidents on one of Sydney’s busiest roads,” Mr Gay said.

“It is also available to move heavy vehicles from Homebush Bay Drive, Centenary Drive, Parramatta Road, James Ruse Drive, Silverwater Road and the Cumberland Highway.

“The tow truck has been operating from its Auburn base since early December, and the early results have been very positive.

"In its first two weeks of operation, it helped clear six incidents.”