Motorists heading home after the Easter break are advised to exercise caution and patience as they navigate a very congested highway.
The traffic management centre reports that at midday today Ewingsdale Road (Byron Bay turn-off) had a 3.5km queue northbound and 2km queue southbound.
Traffic heavy is also heavy at Woodburn.
Further south, between Hexham and Beresfield (Raymond Terrace) there was a one-kilometre queue southbound.
There is also heavy traffic at Warnervale after an earlier accident. Delays are slowly easing in the area.
For the latest information regarding heavy holiday traffic and incidents on the NSW road work visit www.livetraffic.com or call the Traffic Information Line on 132 701.