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![Page 1: Implementing a Blended Model System to Forecast Transportation and Land Use Changes at Bob Hope Airport 15 th TRB National Transportation Planning Applications.](https://reader035.fdocuments.us/reader035/viewer/2022070323/56649dc75503460f94abc45d/html5/thumbnails/1.jpg)
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Implementing a Blended Model System to Forecast Transportation and Land Use Changes
at Bob Hope Airport
15th TRB National Transportation Planning Applications Conference
May 19, 2015
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Acknowledgements
• Burbank-Glendale-Pasadena Airport Authority• Pat Coleman, co-author• Surface Transportation and Uniform Relocation
Assistance Act of 1987
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Overview
• Project Description• Blended Model Process• Alternatives Evaluated• Results
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The Challenge: How to Model Airport “Transit Oriented Development”
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•Historic Lockheed Facility• Industrial uses being repurposed to new media•>50% increase in jobs from 2002 to 2010
Ongoing and Proposed Changes in Land Use
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Potential Changes in Transit Network
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Changes in Airport Mode of Access
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Blended Model Process
Land Use Changes → City of Burbank ModelTransit Network Changes → LA Metro ModelMode of Access Changes → Air Passenger Model
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Burbank Model
• TransCAD model windowed from regional model– Includes the City of Burbank and neighboring
areas with detailed zone structure– Land use based trip generation–Gravity trip distribution–Capacity constrained equilibrium traffic
assignment process–No transit component
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Burbank Model
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Burbank Model
• Synthetic generation and distribution of auto trips at BUR replaced by a survey-based trip table
Synthetic Survey
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LA Metro Model
• Tranplan model –Detailed transit network in and around Los
Angeles County –Vetted by FTA for use in forecasts supporting
Section 5309 New Starts applications
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Air Passenger Model
• Runs in parallel with the “regular” Metro model• Originally used to represent person travel to and
from LAX• Calibrated to market and conditions at BUR
based on extensive data collection
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Blended Model Process• For each scenario,
incremental auto trips calculated by APM and Metro mode choice model.
• Delta applied to the City model just prior to highway assignment.
Detailed Area Highway
Assignments/Link Volumes
City of Burbank TDF
Model
Air Passenger Model
Metro Model
Transit Assignments
Change in Auto Trips
Enplane-ments, Ground
Access by Mode
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Blended Model Process• Metro model zones
outside the study area aggregated, and matched to external zones of the City model, based on the routes that trips from those zones would take to reach the Airport.
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Blended Model Process
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ALT 1
Industrial
ALT 2
Flex Corridor
ALT 3
Flex District
ALT 4
Tech
Land Use Alternatives
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Alt 1 Alt 2 Alt 3 Alt 4
North Hollywood
Local Bus Rapid Bus
BRT Subway
Pasadena Shuttle Express Bus
Express Bus
LRT
Transportation Alternatives
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Alt 1 Alt 2 Alt 3 Alt 4Bus 77,174 76,151 78,881 65,183BRT 66,063 75,964 79,033 68,531LRT 0 0 0 25,237
Subway 113,008 113,516 113,164 109,900
Total 256,245 265,631 271,078 268,851
2035 Transit Boardings on routes serving the Area
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Alt 1 Alt 2 Alt 3 Alt 4Drop-off 38.8% 39.1% 38.7% 37.9%Drive 29.8% 29.9% 29.8% 29.5%Transit 7.4% 7.0% 7.6% 9.2%
Other 24.0% 24.1% 23.8% 23.4%
2035 Mode Share to Airport
(Current transit share to airport is about 2%.)
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Conclusions
• “Blended” model consisting of city highway model, regional transit model, and mode of access model used to forecast impacts of land use and network change at/near an airport
• Expanded BRT and bus service provide greatest ridership in the area (new land uses)
• Subway and LRT increase transit share as mode of access to the airport
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Questions?
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Validation Approach
• Validate Burbank and Metro models to study area conditions
• Calibrate Air Passenger Model to BUR travel markets and modes of arrival
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Burbank Model Validation
• The City of Burbank model was validated with 2010 traffic volumes counts along 10 screenlines
• Additional screenline between BUR and I-5
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Metro Model Validation
• Route level validation• Metro routes 94, 165, 222, and 794• Burbank Bus routes 2 (Empire to Downtown) and
3 (NoHo to Empire)• Metrolink/Amtrak trains
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Air Passenger Model Calibration/Validation
Trip Tables by purpose developed using 2012 air passenger survey data
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Air Passenger Model Calibration/Validation
Calibration target values from 2012 BUR air passenger survey
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