Performance Measures for Freight Transportation (2011) / Chapter Skim
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From page 97... ...
97 a p p e n D i X B statewide and Metropolitan Freight Performance Metrics Examples
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98 CONTENTS 99 Introduction 99 Washington State Measures 99 Washington State Freight Forecast 99 Statewide Freight Growth for Trucks 100 Statewide Corridor Truck Travel Speeds 100 Statewide Truck-Involved Injury and Fatal Crashes 102 Statewide Highway–Rail At-Grade Crashes 104 Puget Sound Metropolitan Area Measures 104 Puget Sound Truck Corridor Travel Speeds 107 Localized Bottleneck Analysis 109 Localized Air-Quality Measures 111 Puget Sound Region Highway–Rail At-Grade Crashes 112 Endnotes
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From page 99... ...
The statewide data represent data for the entire state, while the Puget Sound data reflect metrics from within the boundaries of the Puget Sound Regional Council, which encompasses metropolitan Seattle. These metrics are not intended to be definitive but rather illustrative of how the measures from the report card could be replicated locally.
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The areas with lower average speeds are urban (Puget Sound region and Spokane)
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6 Figure B.6 displays the I-90 truck travel rates by 3-mile segment in Washington. The areas with lower average speeds are urban (Puget Sound region and Spokane)
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As can be seen, average travel rates decreased slightly during the week and rebounded over the course of the weekend. I-5 Average Speed by Day of the Week 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0 M on da y Tu es da y W ed ne sd ay Th ur sd ay Fr id ay Sa tu rd ay Su nd ay Day of the Week A ve ra ge S pe ed (M PH )
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Number of Large Trucks Involved in Fatal Crashes in Washington 30 35 40 45 50 55 60 65 70 75 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Year N um be r o f L ar ge T ru ck s Figure B.11. Washington State fatal crashes involving large trucks.
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Figure B.17 shows the average speeds for the Puget Sound Region by month in 2009. Overall average truck speeds are lowest in January, July, and December but vary by less than two miles an hour.
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Figure B.17 shows the average speeds for the Puget Sound Region by month in 2009. Overall average truck speeds are lowest in January, July, and December but vary by less than two miles an hour.
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Figure B.19 represents the average speed by day of the week for the Puget Sound region along the I-5 corridor. As can be seen, average travel rates decreased slightly during the week and rebounded over the course of the weekend.
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The average speed for trucks at this location is 41 mph for weekday travel, and the peak hour speed falls to 35 mph. I-5/I-90 Bottleneck Summary Average Speed 41 Peak Average Speed 35 Nonpeak Average Speed 44 Nonpeak/peak ratio 1.25 Congestion Index 407,504 Figure B.21.
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From page 108... ...
Source: FHWA and ATRI, 2009 Bottleneck Analysis of 100 Freight Significant Highway Locations, Puget Sound Air Quality Measures. I-90 Floating Bridge Bottleneck Summary Average Speed 51 Peak Average Speed 46 Nonpeak Average Speed 53 Nonpeak/peak Speed Ratio 1.16 Congestion Index 19,052 Comment [JP2]
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From page 109... ...
Although VOCs and NO x levels are reported in Figure B.26, the Puget Sound region does not need to perform "conformity" analysis on its transportation programs to demonstrate that the VOCs and NO x generated by the transportation projects will comply with the region's emissions budget. The region does have to perform conformity analysis for CO and PM 2.5.
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In contrast to the reductions forecast and modeled for the traditional pollutants of CO, PM, VOCs, and NO x , emissions for CO 2 , which is a primary greenhouse gas, are expected to increase. The State of Washington has enacted an aggressive statute to significantly reduce vehicle miles traveled by 2050, but to date the statute has not resulted in mandatory long-term or interim milestone targets that are 21 Localized Air-Quality Measures The Puget Sound region's air-quality emission forecast mirrors national trends, with overall levels of transport-generated emissions expected to fall well below mandated levels, except for carbon dioxide (CO2)
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The FRA Office of Safety Analysis collects data on the number of highway–rail incidents. Data are collected on the county, state, and regional levels, date back to 1975, and are updated monthly.9 In the last 15 years, the number of highway–rail at-grade incidents that have occurred in the Puget Sound region has declined by approximately 80 percent (Figure B.29)
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From page 112... ...
9. 9 Figure B.25 is based on "Table 1-CO Analysis Results," Puget Sound Regional Council, "Appendix E: Air Quality Conformity." Transportation 2040: The Long-Range Metropolitan Transportation Plan of the Central Puget Sound Region, March 4, 2010, p.
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