New research by Canterbury University may reduce traffic times and ease congestion on the roads.
The scientific study is investigating how the movement of vehicles on New Zealand's city roads can be more efficiently managed after accidents and breakdowns.
Transport engineer Glen Koorey says congestion could be reduced by signs displaying diversions from busy roads, re-prioritising traffic signals on a particular route, and opening temporary motorway lanes.
Dr Koorey says he expects to see the findings used for roads in New Zealand's main cities.
He says the recommendations can be flexed to suit an individual city's characteristics.