Abstract: For solving the problems of low efficiency and inaccuracy in the performance test of the pneumatic antilock braking system (ABS) of commercial vehicles cause by the difficulty in accurately controlling brake pipeline pressure, an integrated performance test system for the pneumatic ABS of commercial vehicle is constructed based on virtual instrument technology. The brake pipeline pressure regulation device is designed according to the real brake pipeline structure, and the software developed based on NI LabVIEW platform is adopted to accurately regulate the brake pipeline pressure. Finally, both the test for pressure regulation device and the real vehicle field test for pneumatic ABS performance are conducted, verifying the accurate regulation effects on the brake pipeline pressure of commercial vehicle and the working reliability of the test system constructed

Key words: commercial vehicles, pneumatic antilock braking system, pressure regulation device, test system, design, test