Chassis Dynamometer The high-precision chassis dynamometer VULCAN Evo is suitable for testing light-duty vehicles (LDV) and medium-duty vehicles (MDV). It is available as either a two-wheel or a four-wheel drive set-up. This chassis dynamometer simulates a realistic driving profile, which allows data from road tests to be reproduced in the laboratory. Possible applications cover the full vehicle development and certification process, including durability and fuel economy testing, State of Charge (SoC) testing, emission certification and climatic testing.