Road-Rail vehicle FRILINER SIV is designed for driving and working on the road, as well as for driving and working on the national, regional and siding tracks. The vehicle is equipped with two two-wheel railway attachments positioned ahead of the front and rear axles. The drive of the road-rail vehicle on the track is provided by two tires of the rear car axle by friction against the head of the rail. The front truck axle is held above the rails by a locking device while driving. The vehicle is equipped with CCTV cam system for safe reversing and colour LCD display in driver’s cab, railway lights and as well as lights for work at night. All operations on rails are controlled electrically from the driver’s cab, rail gear functions are automated and monitored, and displayed on board computer. The vehicle body superstructure is equipped with inspection systems that capture data for use in evaluating the condition of the track, such as: track geometry, rail profile, wheel axle accelerometer sensors (used for rail corrugation indexing) and a turnout inspection software module.