Transport and Traffic Telematics (TTT); Dedicated Short Range Communication (DSRC) transmission equipment (500 kbit/s / 250 kbit/s) operating in the 5795 MHz to 5815 MHz frequency band; - Part 2: Harmonised Standard for access to radio spectrum; Sub-part 2: On-Board Units (OBU) (ETSI EN 300 674-2-2 V2.2.1 (2019-06))