A Nottinghamshire Council document said the move would have ‘significant health and safety benefits to the public’.
Coun Penny Gowland put forward a motion after receiving concerns from residents in West Bridgford – but said it is a problem ‘for all residential areas across the county’.
The motion has now been backed by Coun Neil Clarke, council transport and environment committee chairman.
Coun Gowland, Labour member for West Bridgford North division, said: “This will make a real difference and I think it would be very popular. It will make virtually no difference to journey times.
“It is still to be decided how it would work, but it would affect residential roads.
“You see people in online comments being pro-car, but when you actually speak to people they are in favour of speed limits coming down.
“The majority of people don’t want people speeding down their roads.”
She said she was ‘absolutely delighted’ that it is a cross-party motion.
She said: “We also need to have road calming measures to redesign roads to make them for people first, not cars first.
“We know how dangerous air pollution is too and this is a part of that.”
Coun Clarke, Conservative member for Bingham West, said: “This is a concern for residents across the county.
“It is only right that we look at the potential proposals and see how we can best implement them and look at reductions in traffic speed in our residential areas.”
He said proposals will be worked on and brought to a future committee.
The document said: “This council recognises the evidence base that exists demonstrating the significant health and safety benefits to the public from a reduction in vehicle speed to 20 miles per hour.
“This council resolves therefore to task the transport and environment committee with exploring the feasibility of implementing a 20mph speed limit and any other new measures that could help improve road safety in all its residential conurbations.”
The motion is scheduled to be discussed during the full council meeting tomorrow, Thursday, September 23.