The Dorset Police and Crime Commissioner is calling on the government to lower the drink-drive limit.
One in four drivers involved in fatal accidents in the county this year were under the influence of alcohol, drugs or even both.
Martyn Underhill says the current limit is too generous and wants the limit to be the same as that in the rest of Europe.
A majority of European countries, including Denmark and Bulgaria, have a blood alcohol content limit of 0.05%, while England, Wales and Northern Ireland have a limit of 0.08% or 35 micrograms per 100ml of breath, and Scotland 22 micrograms per 100ml of breath.
A separate investigation had revealed that more motorists are being charged with drink-driving in largely rural areas.
Between June 2016 and May 2017, there was a drink-drive charge rate in Dorset of 6.91 per a population of 10,000.