Wellington Police are urging motorists heading south into the CBD from the Urban Motorway to use the off ramps at Aotea Quay through to The Terrace offramp.
Police say traffic in the CBD is now very busy with trucks in Taranaki Street, Vivian Street and banked up through The Terrace tunnel.
Police urge motorists to take care. The truck convoys - about 184 from Seaview and 100 from the McKays Crossing side of the hill - are travelling in one lane.
Please take care as you head closer into the CBD, slow down and watch your following distance. Use alternative offramps to avoid The Terrace tunnel area.