John A. Larson

John A. Larson was a pioneering American psychologist and researcher best known for developing the first automated drug and alcohol influence detection system, known as the Dräger DrugTest, in the 1970s. His work significantly advanced methods for assessing impairment through innovative technology, improving roadside testing for law enforcement. Larson contributed to the scientific understanding of how alcohol affects driving ability, combining psychology and engineering to create more reliable, objective testing procedures. His innovations have had a lasting impact on traffic safety and impaired-driving enforcement, making roads safer for everyone.