Given the city's high rate of injuries and fatalities to pedestrians and cyclists, reducing the limit was a simple and effective way of increasing cyclists' safety, Spokes Dunedin secretary Erika Buky said.
Spokes wanted the lower limit imposed throughout the CDB and all residential areas.
It also asked the council to revive plans for a cycle and pedestrian bridge over the main trunk railway line between the city and the harbour.
The existing overbridge at Cumberland St, which was shared with vehicles, was "frightening and unpleasant" for cyclists and pedestrians and "a total barrier" for those with disabilities, Ms Buky said.
In a separate submission, Northeast Valley resident Peter McDonald sought a 30kmh limit near at least nine suburban shopping precincts (which he did not identify). The reduction recognised the multi-use of those roads, would reduce collisions and would reduce the severity of injuries from collisions which did occur, he said.
It might also reduce road maintenance costs, he said.
