速题库 is an educational app developed by Zhangjiakou Zhongxun Network Technology Co.Ltd. It was created in 2018 with the aim of providing an online platform for exam preparation and question sharing for transportation professionals in China. The app allows users to practice questions, watch video courses, and easily pass their exams.

The app currently covers five major specialties: General Foundation, Road Engineering, Bridge and Tunnel Engineering, Transportation Engineering, and Water Transportation Materials. Its main features include a question bank (with chapter exercises, previous year's questions, full mock exams, study materials, high-frequency data before the exam, and premium practice papers) and video courses (including in-depth classes, intensive courses, and comprehensive review classes).

As of December 2019, 速题库 has accumulated a user base of over 42,000 people. It has provided nearly 10,000 people with free original study materials, meeting the exam preparation needs of nearly 300,000 candidates. The 速题库 team consists of more than 40 members, including operations personnel, sales staff, and online teachers. The app continues to expand its collection of original study materials, earning consistent praise from users for its high-quality question bank and excellent study resources and services.