Reducing speed limits to 20mph has little effect on road safety, according to a new study published in the Journal of Epidemiology and Community Health.
Researchers analysed 76 roads in central Belfast before and after 20mph speed limits were introduced, comparing them to other roads in Northern Ireland where 30mph or 40mph speed limits had been retained.
The findings were that there were “no statistically significant differences” in the long-term rate of crashes and casualties, or the average speed of traffic. Roads with 20mph limits did, however, experience less traffic, according to the research.
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