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Page 63
Suggested Citation:"Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2019. Guide to Truck Activity Data for Emissions Modeling. Washington, DC: The National Academies Press. doi: 10.17226/25484.
Page 63
Page 64
Suggested Citation:"Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2019. Guide to Truck Activity Data for Emissions Modeling. Washington, DC: The National Academies Press. doi: 10.17226/25484.
Page 64

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63 AADT Annual average daily traffic APU Auxiliary power unit ATR Automatic traffic recorder Caltrans California Department of Transportation CARB California Air Resources Board CMV Commercial motor vehicle CRC Coordinating Research Council DOT Department of Transportation ECU Engine control unit FAF Freight Analysis Framework FIPS Federal Information Processing Standards GHG Greenhouse gas GPS Global positioning system GVWR Gross vehicle weight rating HC Hydrocarbon HPMS Highway Performance Monitoring System IRP International Registration Plan ITS Intelligent transportation systems LOS Level of service LPR License plate recognition MAR Mileage accumulation rate MCMIS Motor Carrier Management Information System MOVES Motor Vehicle Emissions Simulator MPO Metropolitan Planning Organization NATSO National Association of Truck Stop Operators NEI National Emissions Inventory NHS National Highway System NOX Oxides of nitrogen NPMRDS National Performance Management Research Data Set NREL National Renewable Energy Laboratory OBD On-board diagnostic OMD Operating mode distribution PIN Personal identification number PM Particulate matter PM2.5 Fine particulate matter (less than 2.5 microns) RPM Revolutions per minute SHP Source hours parked SIP State Implementation Plan Abbreviations

64 Guide to Truck Activity Data for Emissions Modeling TMAS Traffic Management Analysis System TMC Traffic management center UC University of California VIUS Vehicle Inventory and Use Survey VHT Vehicle hours of travel VMT Vehicle miles of travel VOC Volatile organic compound VSP Vehicle-specific power

Next: Appendices A Through G »
Guide to Truck Activity Data for Emissions Modeling Get This Book
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TRB’s National Cooperative Highway Research Program (NCHRP) Research Report 909: Guide to Truck Activity Data for Emissions Modeling 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.

Goods movement is a vital part of the national economy, with freight movement growing faster than passenger travel. The growth in freight traffic is contributing to urban congestion, resulting in hours of delay, increased shipping costs, wasted fuel, and greater emissions of greenhouse gas and criteria pollutants. The limited national data on urban goods movement are insufficient for a thorough understanding of the characteristics of the trucks operating in metropolitan areas and the complex logistical chains that they serve.

For instance, there are at least three different segments of urban freight—long haul, drayage, and pickup and delivery. It is believed that truck fleet characteristics differ between the segments, but only local registration data exist at a level of detail needed to support regional transportation plans, transportation improvement plans, and state implementation plans. The lack of data on all types of commercial trucks affects model estimation and results in inaccurate base year emissions inventories, limiting the ability to design and implement effective policies to reduce freight-related emissions.

NCHRP Research Report 909 enumerates various sources of truck data and how they can be obtained and used to support emissions modeling.

NCHRP Web-Only Document 210: Input Guidelines for Motor Vehicle Emissions Simulator Model (Porter et al., 2014a, 2014b, 2014c) provides guidance on developing local inputs to the MOVES mode. It covers all vehicle types, but is not specific to trucks. NCHRP Research Report 909 supplements NCHRP Web-Only Document 210 by describing the use of various data sources to obtain truck-specific inputs.

Appendices A through G to NCHRP Research Report 909 are published as NCHRP Web-Only Document 261 and contain seven case studies that serve as the basis for much of the guidance provided in NCHRP Research Report 909.

NCHRP Research Report 909 is also supplemented by three MS Excel files that contain data from the case studies:

Case Studies #1 and #7

Case Study #2

Case Studies #3, #4, and #6

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