To measure fuel economy and emissions, vehicles are typically run on a "drive cycle", meaning a pre-defined trajectory of vehicle speed over time. The drive cycles in this support package can be imported into the Drive Cycle Source block of Vehicle Dynamics Blockset, allowing you to easily access over 50 drive cycles that are commonly used throughout different regions of the world, including US06, HWFET, NEDC, Japanese 10-15 mode, and many others. Some drive cycles (e.g., JC08 and CUEDC) also include values for the gear selection, which you may select as an additional output from the Drive Cycle Source block.