This report describes a comparative trial for Traffic Speed Deflectometer Devices (TSDDs) performed in the summer of 2024 in Denmark and presents the results of the analysis of the data obtained during the trial.

Report can be downloaded from the Danish Road Directorate's website. 

On June 21, 2026, a specialized technical workshop titled "Traffic Speed Deflectometer Device (TSDD) Quality Control" was convened in Ljubljana, Slovenia, as part of the 12th International Conference on the Bearing Capacity of Roads, Railways, and Airfields (BCRRA 2026). The workshop brought together global experts across five continents representing road operators, device manufacturers, service contractors, data analysts, and academic researchers.

The summary of the workshop can be downloaded here.