The invention relates to a vehicle-mounted motor vehicle road violation recognition instrument, and relates to the technical field of intelligent traffic. The device comprises a
camera module integrated with a wide-angle lens and an
infrared light supplement unit, wherein the
camera module supports 1080P and 30fps high-definition video acquisition and dynamic
exposure adjustment; the multi-band GPS / Beidou positioning module and the 9-axis IMU cooperate to realize continuous positioning; a
deep learning algorithm module based on a CNN-RNN
hybrid model accurately judges violation behaviors such as retrograde driving, lane changing without turning on a steering lamp,
solid line lane changing and the like through YOLO target detection, FastSAM lane line segmentation and CRNN
license plate recognition technologies; and a 4G / 5G and block chain encrypted data uploading module is arranged, so that
reliable transmission of violation evidence packets is realized. According to the invention, a multi-
modal data
fusion mechanism is innovatively adopted, and a vehicle-mounted power supply and standby battery intelligent switching
system is combined, so that all-weather violation monitoring can be realized in a complex road environment, high-confidence structured evidence is provided for
traffic law enforcement, and violation identification accuracy and evidence chain integrity are effectively improved.