All 30mph and 40mph speed limits on roads in Hampshire are to be reviewed as a matter of priority.
The county council says 30mph limits in all villages are "desirable"
The county council's cabinet agreed to the review after receiving updated guidance on speed limits from the Department for Transport.
The focus of the review will be speed limits of single carriageways running through rural villages.
The council said it was desirable to make 30mph limits standard in villages, as in urban areas with street lighting.
It conceded traffic calming measures could also be necessary.
The council will give urgent consideration to any school lobbying for a 20mph limit to be introduced outside its gates.
Councillor Ken Thornber, leader of Hampshire County Council, said any review will take into account the traffic function of the road and the amount of surrounding housing and other development.
"Although many villages would prefer lower speed limits, it's not clear whether an approach based on 30mph limits in all villages coupled with a possible need for increased enforcement would be a popular move with the wider Hampshire public," said Mr Thornber.