Maria Hammarquist Forsknings- och utvecklingsingenjör Tel +46 10 516 53 72 Email maria.hammarquist@ri.se Location Borås Ask me about Ask me about Story Calibrated Tachographs Contribute to Well Rested and Traffic-Safe Drivers Trucks and buses must be equipped with tachographs that record speed and driving and rest times. These regulations exist to ensure that drivers are rested and traffic-safe, and to create a level playing field in competition. Howev… Expertise The National Laboratory for Electrical Quantities RISE is Sweden's NMI (National Metrology Institute) and is, according to the Swedish constitution, responsible for the central measurement quantities in the International System of Units, SI.