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An estimated 104 lives have been saved thanks to the new law, the government says. (CBC)

The B.C. government says a tough drunk driving law brought in two years ago has reduced the number of impaired driving deaths in the province by 46 per cent.

It says since the law took effect in September 2010, the number of alcohol-related traffic deaths has fallen to an average of 62 a year from about 114 in each of the previous five years.

The government says that means an estimated 104 lives have been saved.

It also says a roadside survey in several areas of the province has found a 44 per cent drop in the number of drivers with a blood alcohol count of 0.05 per cent and over, and a 60-per-cent drop among drivers with higher alcohol counts.

The government says these are the lowest levels of impaired drivers in the history of seven similar surveys.

Attorney General Shirley Bond says more people are getting the message not to drink and drive.