LTL-M mobile retroreflectometer
DELTA has in 2011 launched a new generation of mobile retroreflectometer as accurate as a handheld instrument besides being easy to mount, calibrate and operate
DELTA's LTL2000, LTL-X and LTL-XL instruments are the standard used by the market when measuring retroreflection of road markings, but handheld instruments have limitations.
Handheld instruments provide sample measurements which are not representative of retroreflection measurements of the full length and width of road markings. Handheld instruments may need costly road closure.
DELTA's LTL-M Mobile Retroreflectometer takes the performance of mobile measurement of retroreflection of road markings to a higher level. LTL-M is based on a patent-pending technology making use of a DELTA developed flash system, digital camera technology and distance triangulation. LTL-M offers accuracy in line with handheld instruments under all driving conditions including bumpy roads and curves.
LTL-M provides continuous measurement of night visibility at traffic speed in full length and width of road markings. Besides, LTL-M measures the daylight contrast, the width of markings and record the presence of RRPMs (road studs).
LTL-M can be used as a stand-alone unit easily mounted on a vehicle of your choice or can be integrated with existing mobile road measurement systems.
LTL-M is designed for easy on the spot calibration and maintenance with no or minimal downtime.
In other words, LTL-M offers the accuracy and reliability you are looking for with no need for control measurements.
See LTL-M integration on ARRB Hawkeye platform here.
LTL-M has been tested by VTI (Swedish National Road and Transport Research Institute) in October 2009. The results confirmed the high measurement accuracy performed by LTL-M. Please see the attached report for details.
Round Robin Test reports:
Report of the first round robin test for mobile reflectometers
In the report the instrument test results are anonymous. You can identify LTL-M as "Mob. Instr. 2".
Informe en Español del primer test round robin para retroreflectometros móviles
En el informe los resultados de los equipos son anónimos. Puede identificar el LTL-M como "Mob. Instr. 2"
Straus Zert Test reports:
VTI Test reports: