1. GPS intelligent dispatching system to achieve operation dispatching 2. Voice broadcast and caption display when drving in and out of bus stop 3. Audio and video capture and recording. 4. GPRS, 2G wireless transmission network for option. 5. WCDMA, CDMA2000, TD-SCDMA, 3G wireless transmission network for option 6. Speed remind, Alert driver to drive carefully. 7. Reserved RS485\RS232 interface ...