We provide pre-and-post revenue testing for new construction, as well as annual stray current / corrosion control testing and troubleshooting of existing heavy and light rail transit systems. Services include: track-to-earth and rail isolation joint resistance testing, linear continuity testing of embedded rebar structures, stray current influence testing, as well as troubleshooting of low resistance tracks, track components, and rail fastening systems. Testing performed per ASTM G165-99 (2017) and AREMA standards.