TSR is the abbreviation of Traffic Sign Recognition, known in Chinese as the Traffic Sign Recognition System. The system uses a high-definition camera installed on the vehicle's front windshield to capture traffic signs on the road in real time, analyzes the colour, shape, and text content of the signs using image processing algorithms, and displays the recognition results in real time on the instrument panel or head-up display, such as key information like speed limits, no overtaking, and construction warnings. The core value of TSR lies in improving driving safety; it can reduce violations caused by driver negligence, especially showing obvious advantages in unfamiliar road sections or bad weather conditions. The recognition accuracy of current mainstream systems exceeds 95%, and some high-end models can also integrate TSR with adaptive cruise control to achieve automatic speed limit adjustment. Camera cleanliness, sign obstruction, or extreme weather may affect the recognition effect, so It is best to maintain the camera area regularly. This technology has been widely applied in driving assistance systems such as Honda SENSING, and is particularly practical for car owners who frequently drive long distances or face complex commuting road conditions.