Wonder what is recent use , when THC can be blood for 14 days or more . This is prone for abuse and will not stand in court . We need impaired drivers off the road , not innocents in jail https://t.co/jAPPHDbeOB
"The saliva-testing devices do not claim to measure the impairment of a driver. Instead, they indicate whether someone has recently used cannabis. If the test shows recent use, the driver can be taken in for further testing."