Abstract: In critical driving situations in which emergency braking is required, the antil-ock braking system(ABS)provides with a safe and effective support. ABS keeps the vehicle directionally stable and steerable, even in emergency braking situations. It is intended to establish the evaluation system to tune the performance of braking, and study the key points of the system such as test methods, performance evaluation, sensors and so on. Study on radar velocity sensor in depth, wheel speed sensor, gyroscope, pipe pressure sensor, pedal force sensor,F/V transforming module were carried out based on developing of an ABS roadway test system, and the LabVIEW program was programmed to guide the practical vehicle braking test.The test date of braking in the straight line was picked out for comparative analysis according to the different evaluation indicators. Analysis results showed that the ABS roadway test system and the evaluation indicators were feasible in practice.