CAFE Compliance and Effects Modeling System: The Volpe Model 

Other tasks the model can perform include calculating the costs, effects, and benefits of technologies that could be added in response to a given CAFE standard; fitting a mathematical function forming the basis for an attribute-based CAFE standard; evaluating many potential levels of stringency sequentially; and performing uncertainty analysis (i.e., Monte Carlo simulation).

The Volpe Model, its system documentation, source code, and input files can be downloaded from NHTSA's ftp server via the links below:

Volpe Model for Model Years 2017-2025 Final Rule

• Model software
• System documentation
• Source code

Input-output files (archives of many text and Excel files, and were compressed using 7 ZIP, which is available at www.7-zip.org)

• Calibration of curves (Note: For the Final Rule, the coefficients used for the CAFE standard were not recalibrated. For reference, the final step of curve-calibration performed during the NPRM is included. The complete curve calibration procedure employed for NPRM may be obtained from here.
• Uncertainty analysis
• Evaluation of alternatives (Large file)
• EIS analysis

Please click the following links for the Volpe model files for previous rulemakings

• Volpe Model for Model Years 2017-2025 NPRM
• Volpe Model for Model Years 2012-2016 Final Rule
• Volpe Model for Model Years 2012-2016 NPRM
• Model Year 2011 and Prior Rules