Abstract: A vehicle-mounted device and a fleet management system are disclosed. The vehicle-mounted device is mounted in a vehicle equipped with an OBD module that provides vehicle status parameters, including a sensor module mounted in the vehicle, a sensor module mounted in the vehicle and used to detect the real-time driving status image and driver status image of the vehicle, a general control module electrically connecting the sensor module and the OBD module for receiving the vehicle status parameters of the OBD module and the real-time driving status image and driver status image of the vehicle, and a judgment module electrically connected to the general control module to judge whether the driving of the vehicle complies with the driving specifications according to the data received by the general control module.

Abstract: A display device, includes an image projection module mounted in a vehicle for projecting a driving assistance image toward the front windshield of the vehicle corresponding to the driving of the vehicle, a sensor module mounted in the vehicle for detecting the status of people and vehicles in the vicinity of the vehicle, and a control module electrically connected with the sensor module and the image projection module for displaying warning signals through the image projection module corresponding to the status of people and vehicles near the vehicle detected by the sensor module. The present invention uses the above technical features to allow the driver to obtain all driving information in a more integrated and intuitive way, improving the convenience of use and vehicle driving safety.