But he said traffic lights would be needed to control flows to the motorway, and warned that capacity was expected to reduce in time.
That meant his organisation would work with Auckland Transport to manage the performance of the area's overall roading system, including that of the ramp, which was used by up to 8000 vehicles a day before being closed for the tunnel project last year.
Herne Bay Residents' Association secretary Christine Cavanagh, whose group organised opposition to extra traffic clogging roads leading to an alternative motorway entry point through Curran St, welcomed the announcement but remained suspicious of the agency.
That was because the agency said in an email to her group that it would consider "constraining" traffic flows from Wellington St during afternoon peak periods. She had no doubt that community pressure, supported by such bodies as Auckland Council's transport committee and the Automobile Association, had forced the agency's hand.
Motorway traffic was subjected to major delays when the Victoria Park tunnel was opened late last year with just two of its three lanes, but has been relatively free-flowing since capacity was increased in February.