NCHRP Web-Only Document 261: Case Studies of Truck Activity Data for Emissions Modeling consists of seven case studies that are appendices A to G of NCHRP Report 909: Guide to Truck Activity Data for Emissions Modeling.
NCHRP Research Report 909 explores methods, procedures, and data sets needed to capture commercial vehicle activity, vehicle characteristics, and operations to assist in estimating and forecasting criteria pollutants, air toxics, and greenhouse gas emissions from goods and services movement.
NCHRP Research Report 909 is also supplemented by three MS Excel files that contain data from the case studies:
Table of Contents
|Appendix A. Case Study #1: Representative Operating Mode Distributions for Different Project Contexts||1-36|
|Appendix B. Case Study #2: Age Distributions from Inspection Station Data||37-70|
|Appendix C. Case Study #3: Truck Starts and Soak Time from GPS Data||71-84|
|Appendix D. Case Study #4: Truck Extended Idling and Starts from Fleet Telematics Data||85-104|
|Appendix E. Case Study #5: Speed Distributions from the National Performance Management Research Data Set||105-116|
|Appendix F. Case Study #6: Truck Activity Analyses from Localized Fleet Telematics Data||117-138|
|Appendix G. Case Study #7: Representative Drive Cycles for Different Project Contexts||139-156|
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