The distance travelled by people using different transportation modes (e.g. personal motor vehicles, buses, street cars, etc.). It includes trips taken on both working and non-working days. It is measured in miles travelled by vehicles.
Trips by mode (vehicle miles) = (personal trips * proportion of trips made by mode and distance * midpoint of distance category) / vehicle occupancy
Depends upon:
—Parameters: midpoint of distance category, proportion of trips made by mode and distance and vehicle occupancy
—Other metrics: weekday trips and weekend & holiday trips