Pedestrian Responsive Signal Timing Strategies Oregon ITE Winter Workshop February 26 th, 2015 Sirisha Kothuri, Chris Monsere, Andy Kading - PSU Peter.

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Pedestrian Responsive Signal Timing Strategies Oregon ITE Winter Workshop February 26 th, 2015 Sirisha Kothuri, Chris Monsere, Andy Kading - PSU Peter Koonce, Ty Reynolds – PBOT Ed Smaglik, Chris Sobie - NAU 1

Introduction  Growing emphasis on active transportation  Walking healthy, livable communities  Increase in walking trips 2 Introduction| Motivation| Findings| Next Steps Source: Data from Pucher et al.,(2011) National Walking TrendsLocal Commute Shares - Walk 4% Source: City of Portland, Climate Action Plan

Introduction  Pedestrian fatalities  73% - urban areas  20% - intersections  Poor crossings  Deter people from walking  Unsafe crossing behavior 3 Source: NHTSA, Traffic Safety Facts 2012 “On average, a pedestrian was killed every 2 hours and injured every 7 minutes in traffic crashes” Fatality Trends Introduction| Motivation| Findings| Next Steps

Motivation 4  Delays affect pedestrians disproportionately  “Everyone is a pedestrian” Increasing Priority How do we translate “pedestrian first” policies into specific operational strategies at intersections? Introduction| Motivation| Findings| Next Steps

Completed Research  Exploring Pedestrian Responsive Signal Timing Strategies in Urban Areas  Impacts of change in signal controller mode of operation on ped delay and overall delays  What traffic regimes are best suited?  Impact of increased permissive length on ped delay  Guidance on change in mode of operation based on field data 5 Introduction| Motivation| Findings| Next Steps

Strategies 6

Increase in Permissive Length 7 Introduction| Motivation| Findings| Next Steps

Research in Progress  Improving Walkability Through Control Strategies at Signalized Intersections  Newer treatments (LPI, scramble) improve safety, but peds must still wait their turn  Can result in delays much longer than those for vehicles  Are there opportunities to improve operations through control strategies? 8 Slide Credit: E. Smaglik Introduction| Motivation| Findings| Next Steps

Research in Progress  Two step approach  SITL simulation of various ped control treatments to identify when to implement different strategies  Shorter cycle lengths  Elimination of coordination during certain periods  Leading pedestrian intervals  Pedestrian priority  Field implementation of pedestrian priority with 2070 and NEMA controllers  Portland, OR  Flagstaff and/or Mesa, AZ 9 Slide Credit: E. Smaglik Introduction| Motivation| Simulation| Next Steps

Thank you! 10 Contact Information Sirisha Kothuri, PhD Post Doctoral Research Associate Civil and Environmental Engineering Portland State University Phone:

Pedestrian Priority Algorithm 11 Slide Credit: E. Smaglik Introduction | Motivation | Simulation| Next Steps