What is an OBU machine?

1 Answers
MaciLee
07/29/25 4:09pm
OBU is the card insertion machine for highway ETC systems. Utilizing DSRC technology, OBU establishes a microwave communication link with RSU, enabling vehicle identification and electronic toll deduction without stopping during travel. This achieves unmanned vehicle passage without the need to stop or take cards. The correct installation positions for OBU are: 1. Height not less than 1.2 meters and not exceeding 2.5 meters; 2. Installation angle should be between 30 to 90 degrees; 3. For cars and minivans, the OBU device should be installed on the upper middle part of the front windshield horizontally, while for large trucks and buses, the installation position should be on the lower middle part.
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