Motorists travelling from the Central Coast experienced significant delays and heavy traffic this morning after hundreds of truck drivers protesting against rising petrol costs took over two lanes of the freeway between the Caltex service station at Warnervale and Wahroonga.
About 100 trucks were originally involved in the go-slow on the F3 freeway this morning, as they drove towards Sydney at speeds of between 60kmh and 80kmh, but up to 300 more joined in, according to a spokesman from the Transport Workers Union (TWU).
But an RTA spokesman said this morning that traffic on the F3 was "better than expected".
"Traffic is flowing well. We are aware a lot of people got away early and that seems to have helped, combined with the fact that the convoy is letting traffic pass," he said.
"We're concerned with what's going to happen when the convoy gets to the end of the F3.
"It's always hard to predict these things and Wahroonga during peak hour is quite heavy - we are hoping the trucks disperse and go about their normal business.
"But it seems to be attracting more trucks as it gets closer to Sydney."
The protest was about soaring fuel prices, the Transport Workers Union said.
"Drivers are currently having to absorb the spikes in fuel prices," NSW TWU secretary Tony Sheldon said.
"The major retailers like Coles and Woolworths increase the costs of goods for every member of the public and use the rising fuel costs as an excuse, yet this money isn't passed down the transport chain to the drivers."
A TWU spokesman this morning said a number of truck drivers had joined the protest "on the spot".
"We're just hoping people understand the cause, obviously we apologise for the inconvenience caused but the attitude is it's an issue of safety if these guys are having to spend more money on fuel and less on keeping safe trucks.
"Unsafe trucks on the road are not good for any road user."
The RTA advised motorists to allow extra travel time or use public transport.