Retroreflectometer

LTL-XL

DELTA is the globally leading supplier of retroreflectometers. DELTA offers two lines of products:

LTL line for measuring retroreflection of road markings

RetroSign line for measuring retroreflection of road signs.

Well-known instruments

DELTA's instruments are known in the market since the 70es and are recognized for their accurate measurements and robustness.

The recent generation of instruments, RetroSign GR1, RetroSign GR3, LTL-X and LTL-XL, are very user friendly when it comes to instrument form and weight, calibration of the instrument and setting up the instrument for measurement.

Measurement results are transferred to a PC via USB interface or Bluetooth and data are processed and stored in the RSC (Road Sensor Control) software or in Excel. GPS coordinates allows the measurement results to be presented on Goggle Earth.

LTL-M

DELTA goes mobile with LTL-M

A recent development launched in 2011 is LTL-M mobile retroreflectometer for measuring night visibility of road marking. LTL-M is based on patent-pending technology making use of an in-house developed flash system, digital camera technology and digital image processing.

LTL-M offers accurate measurements at traffic speed and under all driving conditions. LTL-M is very easy to mount on a vehicle, to calibrate and to operate on the road. Tests have shown that LTL-M measures as accurate as a handheld instrument, an accuracy never seen before with a mobile system.