California Phase 1 Background Materials

Background Materials on Air Emissions and Economic Impacts

The information on this page is provided to support the October 2013 Staff Report: Initial Statement of Reasons for Rulemaking - Proposed Greenhouse Gas (GHG) Regulations for Medium- and Heavy-Duty Engines and Vehicles, Optional Reduced Emission Standards for Heavy-Duty Engines, and Amendments to the Heavy-Duty Tractor-Trailer GHG Regulation, the Diesel-Fueled Commercial Motor Vehicle Idling Rule, and the Heavy-Duty Hybrid-Electric Vehicles Certification Procedures.

Emissions Data
A .zip file of the emissions data is available here. The read-me file is a directory of the zip files and the individual files accessed through the links below. GHG Overall Emission impacts calculations of Phase 1 and Tractor-Trailer Greenhouse Regulation. Representation of emission impacts from Phase 1 and Tractor-Trailer Greenhouse Regulation. Phase 1 Provides calculations for Phase 1 Final Reduction Strategy in the Emissions Inventory Appendix. Excel file estimating activity percentages of vocational trucks, sleeper tractors and day-cab tractors. Tractor-Trailer GHG rule Tractor Trailer GHG Rule: Access database providing the calculations and estimated reduction for the original TTGHG rule by model year, calendar year and speed. Tractor Trailer GHG Rule - Sunset Tractors: Access database sunsets the tractor requirement for model year 2014 and newer. Excel file showing the estimated activity percentages by haul types used in staff analysis. Excel file providing estimates of cab type splits, and GHG reductions for different calendar year, model year, and haul type combinations. Excel file providing splits among compliance options, and GHG reductions for different calendar year, model year, van type, and haul type combinations. Text of Python code to calculate the GHG reduction based on the original ARB tractor-trailer regulation for tractors. Text of Python code to calculate the GHG reduction based on the original ARB tractor-trailer regulation for trailers. Optional Low NOx Standards Excel file containing the estimated percentage of engines that meet the optional low NOx engine emission standards and the corresponding NOx emission reduction by model year. Also contains results from the optional NOx emission benefit statewide database in the Emissions Data section. An optional NOx benefit database containing calculations to estimate the potential NOx benefits from optional low NOx engine emission standards.

Emissions Data

A .zip file of the emissions data is available here. The read-me file is a directory of the zip files and the individual files accessed through the links below.

GHG Overall

Phase 1

Provides calculations for Phase 1 Final Reduction Strategy in the Emissions Inventory Appendix.
Excel file estimating activity percentages of vocational trucks, sleeper tractors and day-cab tractors.

Tractor-Trailer GHG rule

Tractor Trailer GHG Rule: Access database providing the calculations and estimated reduction for the original TTGHG rule by model year, calendar year and speed.
Tractor Trailer GHG Rule - Sunset Tractors: Access database sunsets the tractor requirement for model year 2014 and newer.
Excel file showing the estimated activity percentages by haul types used in staff analysis.
Excel file providing estimates of cab type splits, and GHG reductions for different calendar year, model year, and haul type combinations.
Excel file providing splits among compliance options, and GHG reductions for different calendar year, model year, van type, and haul type combinations.
Text of Python code to calculate the GHG reduction based on the original ARB tractor-trailer regulation for tractors.
Text of Python code to calculate the GHG reduction based on the original ARB tractor-trailer regulation for trailers.

Optional Low NOx Standards

Excel file containing the estimated percentage of engines that meet the optional low NOx engine emission standards and the corresponding NOx emission reduction by model year. Also contains results from the optional NOx emission benefit statewide database in the Emissions Data section.
An optional NOx benefit database containing calculations to estimate the potential NOx benefits from optional low NOx engine emission standards.

Economic Data
Optional Low NOx Engine Emission Standards Final Cost Benefit Spreadsheet 2012 Engine NOx Certification Percentage Engine Family Certification Levels

California Phase 1 Background Materials

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Background Materials on Air Emissions and Economic Impacts