National organisation the Cycling Advocates' Network (CAN) today supported a review of blanket open road speed limits, but said the upper speed limit should not be raised from 100 km/h.
CAN also called for speeds in many urban areas to be reduced to 30km/h, reinforced by traffic calming measures.
CAN spokesperson Robert Ibell said there are good safety and environmental reasons for lower speeds.
"Raising the open road speed limit would increase fuel consumption and greenhouse gas emissions. That's the wrong way to go, with climate change already having an impact on New...