Motorists are reminded to take heed of merging signs installed as a trial on the approaches to the Grafton Bridge.

Roads and Maritime Services Acting Director Northern Vicky Sisson said the signs encourage drivers to merge “like a zip”, which allows traffic to move more efficiently, smoothly and safely.

“Motorists should give way to any vehicle that is ahead of them as lanes converge while taking turns to merge and allowing the two lanes of traffic to come together like the teeth of a zip,” Ms Sisson said.

“Trying to merge early can hold up traffic or cause accidents, so by taking turns drivers ensure a smoother, safer and more efficient journey.

“Remember to keep a cool head near merge lanes, exercise caution and use your indicators when merging.”