A three car crash on the Ring Road Altona bound is causing lengthy peak hour delays.

The crash occurred about 7.30am, just before Pascoe Vale Road.

Two right hand lanes are blocked and traffic is queuing behind it back to Dalton Road.

There’s been another three car crash Greensborough bound, coming out of the Pascoe Vale Road tunnel.

Traffic there is backed up to the Tullamarine Freeway.