Eight of the schemes are near schools and seven include traffic calming measures such as speed bumps.

BBC: Leicester 20mph zones given go-ahead

In 2009, Virginia Tech researchers found that there were some traffic calming measures that actually increase fuel consumption and emissions.

FORBES: The High Price Of Speeding

Janet Dover, Lib Dem county councillor for Colehill, where all streetlights are being switched off in the next few days, says she is worried about traffic calming measures being unlit.

BBC: Dorset midnight street light switch-off to continue