Danish company DELTA has launched its new LTL-M mobile retroreflectometer. The company, a leading supplier of retroreflectometers for road markings and road signs, says that until now hand-held retroreflectometers have been the only instruments accurate enough and accepted for contractual valid measurements of road markings. However, it points to laboratory and field tests performed by the Swedish Road Research Institute (VTI), which compared the LTL-M, an existing mobile retrometer and using a hand-held in