2013 Mid-Continent Research Symposium

Transcription

1 Mr. Tracy Troutner, Federal Highway Administration Dr. Nadia Gkritza, Iowa State University Dr. Jiangping Zhou, Iowa State University Dr. Bobby Martens, Iowa State University 2013 Mid-Continent Research Symposium

2 Interstates are critical for freight movement Route Selection Comparison Interstate Highway Balance of NHS Other Highways All trucks 49% 26% 25% Freight-hauling trucks serving places at least 50 miles apart 75% 20% 60%

3 During an extended interstate closure: 1. Determine if the truck traffic adhered to the State DOT designated detour routes. 2. Compare the detour routes in regard to driver costs, vehicle costs, time, and distance. 3. Quantify the impacts to regional freight movements. 4. Determine if regional truck route selection changed over the four month closure of Interstate 29.

4 Snowpack in Northern Rockies was 212% above normal One year s worth of rain fell in the Upper Missouri Basin during the last two weeks of May Water released from Gavins Point Dam on June 25, 2011 exceeded twice the previous record and did not decrease until July 31, 2011, but still above normal outflow The flooding of the Missouri River was the longest duration flood event in U.S. history.

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8 Objective 1: Determine if the truck traffic adhered to the State DOT designated detour routes. Methodology Data

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10 Traditional Localized observations Theoretical modeling and simulations Contemporary Global Positioning Systems (GPS) Geographical Information Systems (GIS) spatial analysis Actual sample empirical data

11 Freight Performance Measures (FPM) Freight Analysis Framework

12 Freight significant corridors Average operating speeds (spot speed analysis) Bottleneck analysis Travel time reliability index Border crossing times Truck Flows/freight intensity mapping

13 Truck position and movement data GPS on large commercial vehicles (tractor-trailer combinations with a gross vehicle weight of over 33,000 pounds) 500,000+ vehicles 4 billion truck points annually GPS pings latitude, longitude, time, date, heading, speed, unique identifier

14 I-29 Opened I-29 Closed 7/1/2010 7/1/2011

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16 +258% + 1,131 AADTT +329% + 1,357 AADTT +44% AADTT +46% + 27 AADTT

17 Objective 2: Compare the detour routes in regard to driver costs, vehicle costs, time, and distance. Objective 3: Quantify the impacts to regional freight movements. Methodology Data Individual route comparison Regional freight economic analysis

18 Assumptions Regional logistical networks Total truck trips between Kansas City and Omaha Truck speed data

19 Highway Economic Requirement System (HERS-ST) An Analysis of the Operational Costs of Trucking: A 2011 Update (ATRI)

20 Route Selection Statistics For One Trip Fuel Oil Tire Wear Main. & Rep. Depreciation Vehicle Costs Driver W&B Total Cost Cost Cost Cost Cost Sum Sum Costs West Detour $ $ 3.40 $ 0.60 $ $ $ $ $ East Detour $ $ 3.29 $ 0.75 $ $ $ $ $ IDOT Detour $ $ 6.36 $ 1.55 $ $ $ $ $ KDOT Detour $ $ 6.60 $ 1.52 $ $ $ $ $ Interstate 29 $ $ 3.76 $ 0.91 $ $ $ $ $

21 Travel Time Hours West Detour 4.15 East Detour 3.73 IDOT Detour 4.66 KDOT Detour 7.12 Interstate

22 Travel Distance Miles West Detour 208 East Detour 211 IDOT Detour 312 KDOT Detour 412 Interstate

23 Summary Impacts Change % Change Vehicle Costs $ 128,684,883 $ 136,276,932 $ 7,592, % Driver Costs $ 50,713,111 $ 61,203,092 $ 10,489, % Total Travel Time 2,322,029 2,802, , % Total Vehicle Miles 149,057, ,461,883 17,404, %

24 Objective 4: Determine if regional truck route selection changed over the four month closure of Interstate 29. Methodology Data

25 FPM truck data for beginning, middle, and end of the closure Routing for trips between K.C. and Omaha compared to same weeks in previous year June 14-18, 2010/ June 13-17, 2011 July 12-16, 2010/ July 11-15, 2011 August 16-20, 2010/ August 15-19, 2011 October 18-22, 2010/ October 17-21, 2011

26 June Change July Change August Change October Change

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31 FPM data allows for an empirical analysis beyond local observation or prediction methods Tools and data allow impacts to be quantified Truck trip detour routes may be influenced by driver costs, vehicle costs, travel time, and travel distance State agencies should consider or anticipate regional vs. long-haul detour routes

32 I-29 looking north at MP 15 (Percival Exit)