RetroSign GRX is the most advanced retroreflectometer available on the market today for measuring retroreflection of road traffic signs, conspicuity tape, license plates, and safety clothing. Its unprecedented performance includes:

• GPS location
• Barcode and QR code scanning
• Sign color recognition and color contrast calculation
• Sign legend and background retroreflectivity
• Sign positioning/orientation and instrument inclination and rotation
• Makes a picture of the sign measurable

Data transfer has an option to be wireless, and data can be processed in existing software formats. GRX is simple to calibrate with stray light compensated, and can store more than the instrument memory. GRX can be delivered with the MUTCD sign library allowing an automatic pass-fail function; if no MUTCD library is used a manual pass-fail function can be activated.

GRX is camera based, employs LED light source technology and up to seven detectors for