1. official website: Coursewares and training materials related to transportation are usually published on the websites of China Communications and Transportation Association and the transportation departments (bureaus) of provinces, autonomous regions and municipalities directly under the Central Government, which can be used as an important reference for preparing for the exam.

2. Online education platform: On online education platforms such as Netease Cloud Classroom, Tencent Classroom and Open Cloud Classroom, there will be courseware and training courses related to traffic, and you can search and purchase corresponding courses on these platforms.