Does the ETC gantry on the highway measure speed?
1 Answers
The ETC gantry on the highway does not measure speed. Currently, the gantry is only equipped with ETC gantry system devices, primarily for path recognition and precise toll calculation of passing vehicles. The gantry mainly installs devices to identify vehicle information, utilizing microwave-dedicated short-range communication between the ETC device installed on the vehicle and the microwave antenna on the ETC lane gantry. The ETC gantry equipment mainly consists of microwave antennas, license plate recognition systems, high-definition cameras, and outdoor integrated control cabinets, symmetrically installed not far apart on both sides of the road. To avoid mutual interference, the installation distance between bidirectional ETC gantry systems follows strict standards. The ETC gantry system has a unified national specification and standard, and technically, it does not reserve interfaces for speed measurement or violation capture systems.