Police demonstrate the Alere DDS2, a saliva swab test some authorities are using to determine marijuana impairment, in May at the Capitol in Sacramento. Police demonstrate the Alere DDS2, a saliva swab test some authorities are using to determine marijuana impairment, in May at the Capitol in Sacramento. A bicyclist has died after colliding with a vehicle driven by a man under the influence of marijuana, according to the Sacramento Police Department. The cyclist, Amar Askhra, 41, struck the vehicle on Truxel Road near the South Natomas Community Center at noon on Saturday. The driver had the right of way, police spokeswoman Linda Matthew said. [continues 295 words]