Between 26 September and 20 October 2006 Thalys PBKA 4302 was used for test runs on the HSL 4/HSL-Zuid. These test runs started at Antwerpen-Luchtbal station and ended or at the border, or at the viaduct over the "Hollandsch Diep", depending on the clearance of the Dutch tracks by the Dutch authorities.

A probably unique combination never to be seen again: the sleek profile of Thalys PBKA 4302, stopping in a suburban station on a new line with rusted rails...