New 20mph schemes could be in place in 13 areas across the county from February next year.
The 13 areas include: Stilton, Godmanchester, St Neots, Duxford, Somersham, Great Gransden, Toft, Woodhurst, Barton, Hauxton, Oakington and Westwick.
The delivery on these schemes will be dependent on any objections received and weather conditions can affect the timing.
There are further schemes proposed in Melbourn and Sawston but due to traffic calming measures being requested as well as the 20mph limit this will take slightly longer to implement; these are expected next summer.
The formal consultation period started on October 5 and will run for 21 days.
Earlier this year, the Highways and Transport Committee agreed to establish a new process to implement 20mph schemes and these are the resulting schemes.
Local authorities have been introducing 20mph speed limits across the country due to the recognised benefits and public support.
The aim of introducing 20mph speed limits is to improve road safety, encourage more active travel i.e. walking or cycling and to reduce noise and pollution.
Either a 20mph limit or a 20mph zone will be installed depending on the specific location.
A 20mph limit typically covers individual or a small number of streets and requires signs only. Whereas 20mph zones typically cover larger areas and require both signs and markings.
Cllr Alex Beckett, chair of the Highways and Transport Committee at Cambridgeshire County Council, said: “I’m really pleased we’re seeing 20mph schemes being implemented across the county.
"They are a proven way to improve road safety and reduce pollution, studies show that even a 1mph reduction in mean speed can reduce accidents by 6% and 20mph zones can reduce casualties by 42% and drop pollution by a third."