OPTIMIZING SHUTTLE SERVICES BETWEEN UW AND HUTCHINSON Xiaolei Ma, Sa Xiao, Yihong Wang, Quanxin Mao Dec 5, 2011 CEE 424 1

Outline 2  Objectives  Data  Analysis  Results  Conclusion

Objectives  Two Shuttle Service Providers:  University of Washington Medical Center Two Routes: UWMC → SLU SLU → HMC  Fred Hutchinson Cancer Research Center Two Routes: Hutchinson → UWMC SCCA → Seattle Children's Hospital 3

Original Shuttle Service Routes 4

Objectives  Goals:  Reduce total travel time  Reduce fuel cost  Reduce emissions 5 Reduce total mileages

Data 1. Seattle Arterial Street Data 2. Shuttle Stop Data 3. Fuel Price Data 4. EPA Emission Data 6

Analysis Import stop locations data into the map Stops locations are collected from Google Maps Projection Transformation Geographic Coordinated → Projected Coordinated 7

Analysis Speed Classification 8

Analysis Shuttle Stops Optimization Create a buffer with 150 meters around each stop Merge overlapped stops into one stop 9

Analysis ArcGIS: Network Analyst Route Optimization Assumptions I. Optimization based on shortest travel time II. Time-of-day effect simplified III. 2-minute Stop time IV. Headway neglected 10

Results 1. Divided stops into two Service Areas  Use SR-520 Bridge as cutoff UW Loop Downtown Loop Express Shuttle 11

Results 12

Results % reduction Travel Time 44.54% reduction Travel Mileage 44.54% reduction Fuel Consumption 44.54% Nitrous-oxide reduction 44.54% Greenhouse gas reduction 44.54% Particulate matter reduction Emissions

Conclusion  Simplify the routes  Reduce costs  Reduce emissions 14

Resources 1. King County CKGIS Center. Web. 21 Nov “UW Shuttles: South Lake Union Shuttle.” University of Washington Facilities Services. Web. 21 Nov “Shuttles: FHCRC to U University of Washington Medical Center.” Fred Hutchinson Cancer Research Center. Web. 21 Nov “Green Vehicle Guide | US EPA." US Environmental Protection Agency. Web. 21 Nov “Current State Fuel Prices.” AAA’s Daily Fuel Gauge Report. Web. 21 Nov UW shuttle: Fred Hutchinson Cancer Research Center: Seattle Arterial 15

Questions? 16 Q&A