JJG (Traffic) 067-2020 is a verification specification for asphalt penetration testers, which is mainly applicable to the first verification, subsequent verification and in-use inspection of asphalt penetration testers. The standard specifies the measurement performance requirements, general technical requirements and methods of verification of the instrument to ensure the accuracy and Reliability of the instrument when measuring the penetration of solid or semi-solid asphalt materials. The standard also includes appendices, which provide practical information such as verification record sheets and certificate formats for users to standardize operations. The implementation of this procedure helps to improve the standardization level of asphalt material testing and ensure the mass and safety of road works.