Works is underway to install a citywide 20-mile-per-hour speed limit in Ely.
Many locals say they support the move to make the city "safer and more pleasant".
A public consultation saw 122 people write to the county council in support of the plans.
However, 65 objections to the 20mph zone were also lodged, with some people arguing the change was "unnecessary".
A report published by the county council said the lower speed limit could reduce the chance of accidents, and improve air quality in the city:
"Installing a lower speed limit makes it an offence for motor vehicles to exceed that speed.
"Lower speeds could lessen the likelihood of traffic collisions occurring and if they were to occur could lessen the impact to victims.
"Lower vehicular speeds can make the environment more conducive to alternative, sustainable or active travel modes.
"Lower vehicular speeds could positively affect air quality and the wider environment."
Work to install the new measures began on Monday 4 March 2024.
It is expected to take four weeks to complete the project.