Work is under way to upgrade the traffic light system at the intersection of Guyton St and Victoria Ave in central Whanganui.
Whanganui District Council roading transport engineer Chris Thrupp said traffic signal equipment and cabling at the location was becoming unreliable and parts to repair this older equipment were in short supply.
"The council has been waiting for funding to be approved to complete the work," Thrupp said.
The key outcome of the project was "reliability".
"The new equipment will allow 24/7 remote monitoring for faults, a traffic camera for incidents and optimisation of the signal phasing."