California residents may be aware that the same amount of marijuana can affect individuals differently. The presence of THC in a person's blood stream can also be detected long after the drug's effects have worn off. These are a couple of the reasons why AAA wants to see an end to the legal blood-test threshold for THC that is used to convict people of impaired driving in some states.
California fans of suspended NFL player Justin Blackmon are probably aware of his multiple charges related to substance abuse that led to his suspension from playing in 2013. In December of 2015, he was taken into custody again after being stopped in Oklahoma for a problem with a brake light. Reportedly, he said he had only had two drinks, but because of his slow speech, the officer asked him to submit to a field sobriety test. When he performed poorly, the officer did a preliminary breath test that Blackmon did not pass. Officers say he refused a Breathalyzer test, and he later pleaded guilty to a misdemeanor DUI.