The 2014 California Vehicle Inventory and Use Survey is a study conducted by the Institute of Transportation Studies at the University of California, Irvine for the State of California. This study is funded by the California Air Resources Board (CARB), and conducted in partnership with the California Department of Transportation (CALTRANS) and the California Energy Commission (CEC).

The purpose of Cal-VIUS is to obtain data on the physical and operational characteristics of commercial vehicles operating in California. The data collected from this study will provide useful information for the State of California to gain better insight into the activity of commercial vehicles that will lead to better investments in the transportation infrastructure for the State of California.

Survey Format

This study comprises two questionnaires: a web-based Fleet Manager Survey, and a smartphone-based Driver Survey. The first survey is designed to be completed by the vehicle fleet manager or owner, while the second survey is designed for the driver of the vehicle identified in this letter.

  1. Web-based Fleet Manager Survey
    The purpose of the Fleet Manager Survey is to obtain information about the vehicle characteristics and a summary of its operational activity in the year 2013.
  2. Smartphone App-based Driver Survey
    The Driver Survey is designed to be completed from an Android-based smartphone or iPhone. The purpose of the Driver Survey is to obtain a 3-day diary of trip activities within and in the States neighboring California. Detailed GPS trajectories will not be collected. However, if permitted by the driver, GPS locations will be collected at each vehicle stop.
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