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TRAVEL TIME ANALYSIS Use of Data IN-KY-OH Traffic Incident Management Conference October 9, 2015 Dayton, OH
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Congestion Management Process (CMP) Required for all MPOs with population > 200,000 Must use CMP in AQ non-attainment areas to program projects that will increase capacity 23 CFR 450.320
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Congestion Management Process (CMP) 8-step process that provides DATA!!! DATA provides a basis to make transportation planning decisions
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Congestion Management Process (CMP) 8-step process: 1.Develop CM Objectives 2.Identify Area of application 3.Define System or network of interest 4.Develop Performance Measures
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Congestion Management Process (CMP) 8-step process: 5. Institute System Performance Monitoring Plan 6. Identify and Evaluate Strategies 7.Implement selected Strategies and manage transportation system 8. Monitor Strategy Effectiveness
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Congestion Management Process (CMP) In the beginning… Level of Service (LOS) was a main tool to identify congestion
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Performance Measures Evolved to encompass TRAVEL TIME RELIABILITY Buffer Index = Additional Time added to ensure on-time arrival Planning Time Index (PTI) = Total time needed to arrive on-time Travel Time Index (TTI) = 95 TH or 90 th percentile (one of two bad days/mo) Volume-to-Capacity Ratio (V/C) Travel Speed LOS Annual VMT under congested condition Annual VHT under congested condition Annual vehicle hours of delay
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Congestion Management Process (CMP) Cincinnati MPO: Buffer Index is the primary performance measure!!! Extra time that must be added to average travel time Normal Trip: 20 minutes Buffer Index: 40% Buffer Time: 8 minutes Total Time Needed: 28 minutes = Planning Time Index
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Congestion Management Process (CMP) Lexington MPO: Travel Time Index (TTI) is the primary performance measure!!! Comparison of travel conditions in the peak period with free-flow conditions TTI = Average Travel Time Free Flow Travel Time
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Congestion Management Process (CMP) In order to do : Travel Time Reliability Calculations and Identify congested roadway segments multiple sources of data are needed.
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Congestion Management Process (CMP) In the beginning… GEOlogger data collected by volunteers
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National Performance Management Research Data Set (NPMRDS) Historical data from a company named HERE Covered the National Highway System (NHS) Additional Road Coverage (Arterials, Collectors, etc) must go through HERE Data Sources
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SourceType Historic Real-Time TrafficReal-Time TrafficReal-Time XD TrafficReal-Time Data Sources
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In 2011… KY Transportation Cabinet purchased 2010 TM data (now TM data) -Data from probe devices (GARMIN TM GPS units, etc.) -85% of the market -Provided speeds for every day of the year.
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Data Format 15-min increments Average speed, standard deviation, sample counts By day of week and month Available at link level and by direction
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Data Coverage 2011 Sample Percentage 2012 Sample Percentage Thickness of line indicates amount of data available
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Data Coverage Orange – 2012 Blue – 2011 Comparison of Data on Interstate (100%) and Arterial (40-60%)
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TTI Reference Speeds Norm: 95 TH or 90 th percentile (one or two bad days/mo) The Lexington MPO uses: 85 th percentile for uninterrupted flow facilities ( a delay that occurs more frequently) 60 th percentile for interrupted flow facilities, or the posted speed limit
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Lexington MPO Corridors 2011 PM Cardinal Direction 2012 PM Cardinal Direction
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BlueToad TM Calculate travel time and road speeds in real-time from Bluetooth signals Reliability Indexes Computed Travel-Time Index, Buffer-Time Index, Planning-Time Index
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BlueToad TM Lexington, KY 35 Bluetooth TM travel time O and D data devices Supplements HERE TM data Other Uses: Used to maximize traffic signal timing efficiency Use data to perform before and after studies for the CMP
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Google Traffic TM A feature on Google Maps Displays Traffic Conditions in REAL-TIME on major roads and highways in 50 countries Works by analyzing GPS-determined locations transmitted to Google by mobile phone users. LEXINGTON MPO: Uses data for comparison purposes, to validate and calibrate the NAVTEQ data.
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Google Traffic TM 5:30 pm ET on 9/14/15
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Waze Traffic TM GPS – based app for smart phones Differs because it is Community–driven Users (Wazers) report accidents, traffic jams, speed traps, cheapest gas, etc. Note: Purchased by Google in 2013, supports Android, iPhone, Symbian, BlackBerry 10, Windows Phone 8 and Windows Mobile LEXINGTON MPO: Uses data for comparison purposes, to validate and calibrate the NAVTEQ data.
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Smart Phone mounted on car dash Used as a GPS
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Get to choose your vehicle Shows the speeds of roadways that are not at normal speed
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Interactive Real Time Data Report incidents
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Indicate Hazards
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Alert motorist to Police Activity
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Make it a game to encourage use. Appeal to the younger generation Get POINTS, that lead to CANDY
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SourceType Historic Real-Time TrafficReal-Time TrafficReal-Time XD TrafficReal-Time Summary - Data Sources
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Bernadette Dupont U.S. Department of Transportation Federal Highway Administration - KY 330 West Broadway Frankfort, KY 40601-1981 Land Line: (502) 223-6729 Fax Line: (502) 223-6735 Bernadette.Dupont@dot.gov
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