Incorporating Greenhouse Gas Emissions into the Collaborative Decision-Making Process (2012) / Chapter Skim
Currently Skimming:
Pages 35-54
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 35... ...
35 estimated reduction in CO2 emissions for different types of strategies. It seems likely that transportation professionals will be called on to assess carbon footprints more often in the coming years, and thus this report provides an overview of the tools that are available.
|
From page 36... ...
36 National Household Travel Survey, "which contains information on gasoline usage associated with travel by private automobile, family characteristics, and zip code characteristics." Although their study distinguishes road and rail traffic, and focuses at the regional level, it only includes two modes and does not distinguish fuel types. Like most other methods, freight is not addressed separately in their study.
|
From page 37... ...
37 corridor planning, or project development and environmental documentation. Discussion: This step involves determining (1)
|
From page 39... ...
39 Table 4.4. Possible GHG Emissions Metrics Carbon dioxide (CO2)
|
From page 40... ...
40 Table 4.5. Methods for Estimating Baseline GHG Emissions Method Comments Method A: VMT trend extrapolation with VMT-based emission factors Description: The simplest approach available for transportation GHG inventory development at a substate level.
|
From page 41... ...
41 Method C: Traffic counts, forecasts, and transit operating data with emission factors Description: Traffic counts for the base year are projected to future years using growth factors, and VMT- or speed-based emission factors are applied. Situations in which to apply: • When this method is already being used to determine base year and design year no-build traffic forecasts with associated traffic capacity analyses for documenting project need.
|
From page 42... ...
42 Table 4.6. CO2 Emission Factors by Fuel Type Fuel CO2 Emission Factor (kg/gal)
|
From page 43... ...
43 conduct planning for GHG strategies, and analyze emissions reductions. It is also possible that the desire to fund GHG-reducing projects may be a significant factor influencing decisions about overall transportation revenue streams.
|
From page 44... ...
44 Truck and bus idle reduction X X X Transit fare measures (discounts and incentives) X X Transit frequency, Level of Service, and coverage X X Transit priority measures (signal preemption, queue bypass lanes, shoulder running)
|
From page 45... ...
45 evaluated within this corridor should be consistent with that plan. Ideally, the LRP or corridor plan will have been developed considering land use, as well as transportation issues (e.g., as part of a regional or corridor vision for transportation and growth)
|
From page 46... ...
Table 4.9. Calculation Methods and Data Sources Level of Analysis Comments (A)
|
From page 47... ...
47 Table 4.10. Example Analysis Tools for GHG Analysis Category of Tool Description Examples Travel demand and related models Regional, statewide, or subarea models of the transportation network.
|
From page 48... ...
Table 4.11. Greenhouse Gas Strategy Evaluation Tools by Strategy Tool or Method G H G In ve nt o ry D ev el o p m en t H ig hw ay N et w o rk Im p ro ve m en ts U rb an T ra ns it E xp an si o n In te rc it y R ai l a nd B us N o nm o to ri ze d Im p ro ve m en ts R ai l & M ar in e Im p ro ve m en ts IT S /O p er at io ns & M an ag em en t S p ee d M an ag em en t Id le R ed uc ti o n Tr an si t S er vi ce Im p ro ve m en ts R o ad w ay P ri ci ng La nd U se & S m ar t G ro w th T D M & P ub lic E d uc at io n Ve hi cl e & F ue l P o lic ie s C o ns tr uc ti o n an d M ai nt en an ce P ra ct ic es Travel Demand and Related Models Travel demand models: Basica X X X Travel demand models: Enhancedb X X X Xc X X X X X Integrated transportation–land use models X X X Xc X X X ITS Deployment Analysis System (IDAS)
|
From page 49... ...
49 Table 4.12. Calculation Methods and Data Sources for GHG Analysis Method Comments (A)
|
From page 50... ...
50 Table 4.12. Calculation Methods and Data Sources for GHG Analysis Method Comments (D)
|
From page 51... ...
51 Table 4.13. Lifecycle GHG Emissions Calculators for Vehicles and Fuels Calculator Format Output Puget Sound Clean Air Agency and Puget Sound Clean Cities Coalition: Evergreen Fleets Emissions Calculatora Online forms For each vehicle, total tons of CO2.
|
From page 52... ...
52 Table 4.14. Vehicle and Fuel Scopes of GHG Emissions Calculators Calculator Vehicle Scope Fuel Scope World Resources Institute: The Greenhouse Gas Protocol -- Calculating CO2 Emissions from Mobile Sources taxi, bus, local bus, coach, freight truck, light rail, tram, subway, (gasoline, diesel, CNG, ethanol)
|
From page 53... ...
53 Table 4.14. Vehicle and Fuel Scopes of GHG Emissions Calculators Calculator Vehicle Scope Fuel Scope GHGenius 3.15 For fuel calculations: Light-duty vehicle, heavy-duty vehicle, bus, truck.
|
From page 54... ...
54 where ECH4 = emissions of CH4 (g) , F = fuel use (gal)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.