Imposing a 20mph speed limit in Hull city centre could lead to more congestion, a council report says.
Councillor Martin Mancey, cabinet member for roads, questioned whether driving at 30mph in the city centre was safe.
However, a week of monitoring carried out in nine city centre streets, including Lowgate, Market Place and Carr Lane, revealed not one car broke the speed limit.
The highest speed was 30mph in Alfred Gelder Street. Other streets recorded speeds ranging from 23mph to 27mph.
The report warns "careful consideration should be given to the question, 'what would the benefits be of progressing with a 20mph zone within the city?'" as there is not a speeding issue.
Councillors have been told they can go out to consultation, but were warned the scheme would cost at least £65,000.
In July, Cllr Mancey said: "Some cities are pursuing 20mph zones across their entire network.
"I would not be in favour of that, but there may well be a case for a 20mph zone in the city centre, particularly with extra visitors expected in the build-up to the UK City of Culture year in 2017."
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