"Dedicated Short Range Communications is a two-way short-to-medium range wireless communications capability that permits very high data transmission critical in communications-based active safety applications" - https://www.its.dot.gov/factsheets/dsrc_factsheet.htm

"Dedicated short-range communications are one-way or two-way short-range to medium-range wireless communication channels specifically designed for automotive use and a corresponding set of protocols and standards." - https://en.wikipedia.org/wiki/Dedicated_short-range_communications