Mobile measurement of pavement markings

LTL-M mobile retroreflectometer mounted on at car.

High quality pavement markings are the key to reduce the risk of road accidents. Using a mobile retroreflectometer, road markings can be measured in full length and width to ensure compliance with standards.

Driving at nighttime and under difficult weather conditions, drivers rely on pavement markings and road signs to guide them safely to their destination. International standards exist (e.g. the European CEN and the US ASTM standards) explaining how to measure and what minimum retroreflection levels to meet. Outside EU and USA the CEN and ASTM standards are increasingly being implemented as one way to improve safe driving.

Hand-held retroreflectometers are today the only instruments being accurate enough and accepted for contractual valid measurements of road markings.

More recently mobile retroreflectometers have been introduced on the market. A mobile retroreflectometer allows measuring the full length and width of pavement markings.

Existing instruments on the market have, due to the technology used, difficulty in providing precise measurement results making them suitable to generate an overview of the conditions of the markings.

A new patented mobile retroreflectometer technology developed by DELTA offers increased measurement accuracy in line with hand-held instruments under all driving conditions including bumpy roads and curves. This technology is able to compensate for car movements by digital processing with no moving parts.

DELTA is convinced that offering an accurate and easy to use mobile retroreflectometer will increase mobile retroreflection measurements in the future - to the benefit of safe driving.

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