Investigation of Heavy-Duty Vocational Vehicle Usage and Suitability of Aerodynamic Improvement Devices

This study seeks to paint a clear picture of the types of vocational class 4 – 6 vehicles, with 14,001 to 26,000 lbs. gross vehicle weight rating, operating in the state of California, how they are used, and by whom.   Furthermore, it will seek to answer questions about the number of Class 4-6 box type vehicles operating within in the state, how many drive at high and low speeds and daily distances they operate within.  This information will be gathered through a survey and data collection exercise and combined in a way that ARB can better understand the statewide impact, aerodynamic improvement devices could have on heavy-duty vocational vehicle fuel economy.