Maintaining and upgrading existing revenue service lines is one of the key topics amongst most of railway networks in order increase safety, availability, regularity, speed and load. The Pandoscope® is a new methodology for railway track characterisation using light and cost effective tests, based on the coupled use of the PANDA® dynamic penetration tests and geoendoscopy. The goal of this methodology is to provide the asset manager geotechnical key point indicator helping with the optimisation of the maintenance and work strategy.