A traffic collision has halted traffic travelling south on the M1 this afternoon.
It happened in the left lane through the Elanora just after 3.00pm, causing massive delays for the weekend traffic.
Witnesses reported two trucks and a car were involved in the collision, which happened just before the 19th ave overpass.
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The Department of Transport and Main Roads is warning of long delays, and urging motorists to show patience.
Delays are currently back to Worongary.