Alcohol and other substances impact a driver’s ability to make accurate judgments. It can slow reflexes, making accidents much more likely. In 2004, alcohol was a contributing factor in 23% of all police-reported motor vehicle fatal collisions. In just one year in British Columbia, 93 people were killed in alcohol-related collisions and approximately 3,200 people were injured. Studies from Transport Canada indicate that even if someone is not over the legal limit, the risk of crashes causing death is more than the average sober driver.