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Forecasting and Optimization of Urban Traffic for Improved Adaptation to Climate Change
Forecasting and Optimization of Urban Traffic for Improved Adaptation to Climate Change
Forecasting and Optimization of Urban Traffic for Improved Adaptation to Climate Change

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105628
ISBN  
9798265429964
DDC  
388.4
저자명  
Chen, Yirong.
서명/저자  
Forecasting and Optimization of Urban Traffic for Improved Adaptation to Climate Change
발행사항  
[Sl] : Stanford University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
165 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
주기사항  
Advisor: Lepech, Michael.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2025.
초록/해제  
요약The rapid urbanization and exponential growth in vehicle ownership have exacerbated traffic congestion, a challenge further exacerbated by climate change-induced extreme weather events. These events disrupt traffic flow and amplify greenhouse gas emissions, posing significant barriers to efficient urban mobility. Climate change projections indicate increasing frequency and severity of extreme weather events, including heatwaves, heavy rainfall, and storms, all of which directly impair transportation by reducing road capacity, elevating accident risks, and altering travel behaviors. Conventional traffic management strategies, however, often fail to account for these climate-related disruptions systematically. At the same time, existing optimization frameworks, particularly reinforcement learning (RL)-based traffic signal control systems, assume instantaneous access to real-time data and rely on high-frequency interventions (e.g., every 5 seconds). This idealized setup conflicts with real-world constraints such as communication delays, computational resource limitations, and safety regulations that necessitate longer control intervals. As a result, current approaches struggle to maintain efficiency under dynamic weather conditions or operational constraints, highlighting a critical gap between research and practical implementation.To address these challenges, this dissertation introduces a holistic framework that integrates climate impact quantification, traffic forecasting, and adaptive optimization. First, we develop a comprehensive model to assess the environmental, economic, and social consequences of climate-induced traffic disruptions under three top-priority climate change scenarios. Our analysis reveals significant welfare losses due to prolonged congestion and increased emissions under moderate to high climate change scenarios, underscoring the urgency of proactive adaptation. Building on this foundation, we present three key contributions. The first is AHSTN (Adaptive Hierarchical Spatio-Temporal Network), an end-to-end graph convolutional network that dynamically captures multiscale spatiotemporal dependencies in traffic data. By leveraging hierarchical learning mechanisms, AHSTN achieves superior prediction accuracy while reducing computational complexity, enabling real-time forecasting of weather-sensitive traffic patterns. The second contribution is prediction-driven signal control, a novel framework that integrates traffic flow forecasts with real-time traffic data to optimize signal timings. This method dynamically adjusts phase durations by incorporating both current and predicted vehicle queues, ensuring robustness under communication delays and uncertain weather conditions. The third contribution is CCDA (Centralized Critic and Decentralized Actors), a scalable RL architecture designed for low-frequency signal control. CCDA introduces the adjust all phases action design, allowing simultaneous optimization of signal durations across all phases in a cycle, thereby maximizing the impact of each intervention. Through decentralized actors and a centralized critic, CCDA balances localized decision-making with global coordination, ensuring adaptability to varying control frequencies while maintaining computational efficiency. Collectively, these advancements provide a scalable and adaptive approach to urban traffic management, bridging the gap between theoretical models and real-world operational requirements while enhancing resilience to climate change.
일반주제명  
Traffic flow
일반주제명  
Commuting
일반주제명  
Climate change
일반주제명  
Rain
일반주제명  
Traffic control
일반주제명  
Meteorology
일반주제명  
Transportation
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798265429964
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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a388.4
■1001  ▼aChen,  Yirong.
■24510▼aForecasting  and  Optimization  of  Urban  Traffic  for  Improved  Adaptation  to  Climate  Change
■260    ▼a[Sl]▼bStanford  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a165  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  A.
■500    ▼aAdvisor:  Lepech,  Michael.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2025.
■520    ▼aThe  rapid  urbanization  and  exponential  growth  in  vehicle  ownership  have  exacerbated  traffic  congestion,  a  challenge  further  exacerbated  by  climate  change-induced  extreme  weather  events.  These  events  disrupt  traffic  flow  and  amplify  greenhouse  gas  emissions,  posing  significant  barriers  to  efficient  urban  mobility.  Climate  change  projections  indicate  increasing  frequency  and  severity  of  extreme  weather  events,  including  heatwaves,  heavy  rainfall,  and  storms,  all  of  which  directly  impair  transportation  by  reducing  road  capacity,  elevating  accident  risks,  and  altering  travel  behaviors.  Conventional  traffic  management  strategies,  however,  often  fail  to  account  for  these  climate-related  disruptions  systematically.  At  the  same  time,  existing  optimization  frameworks,  particularly  reinforcement  learning  (RL)-based  traffic  signal  control  systems,  assume  instantaneous  access  to  real-time  data  and  rely  on  high-frequency  interventions  (e.g.,  every  5  seconds).  This  idealized  setup  conflicts  with  real-world  constraints  such  as  communication  delays,  computational  resource  limitations,  and  safety  regulations  that  necessitate  longer  control  intervals.  As  a  result,  current  approaches  struggle  to  maintain  efficiency  under  dynamic  weather  conditions  or  operational  constraints,  highlighting  a  critical  gap  between  research  and  practical  implementation.To  address  these  challenges,  this  dissertation  introduces  a  holistic  framework  that  integrates  climate  impact  quantification,  traffic  forecasting,  and  adaptive  optimization.  First,  we  develop  a  comprehensive  model  to  assess  the  environmental,  economic,  and  social  consequences  of  climate-induced  traffic  disruptions  under  three  top-priority  climate  change  scenarios.  Our  analysis  reveals  significant  welfare  losses  due  to  prolonged  congestion  and  increased  emissions  under  moderate  to  high  climate  change  scenarios,  underscoring  the  urgency  of  proactive  adaptation.  Building  on  this  foundation,  we  present  three  key  contributions.  The  first  is  AHSTN  (Adaptive  Hierarchical  Spatio-Temporal  Network),  an  end-to-end  graph  convolutional  network  that  dynamically  captures  multiscale  spatiotemporal  dependencies  in  traffic  data.  By  leveraging  hierarchical  learning  mechanisms,  AHSTN  achieves  superior  prediction  accuracy  while  reducing  computational  complexity,  enabling  real-time  forecasting  of  weather-sensitive  traffic  patterns.  The  second  contribution  is  prediction-driven  signal  control,  a  novel  framework  that  integrates  traffic  flow  forecasts  with  real-time  traffic  data  to  optimize  signal  timings.  This  method  dynamically  adjusts  phase  durations  by  incorporating  both  current  and  predicted  vehicle  queues,  ensuring  robustness  under  communication  delays  and  uncertain  weather  conditions.  The  third  contribution  is  CCDA  (Centralized  Critic  and  Decentralized  Actors),  a  scalable  RL  architecture  designed  for  low-frequency  signal  control.  CCDA  introduces  the  adjust  all  phases  action  design,  allowing  simultaneous  optimization  of  signal  durations  across  all  phases  in  a  cycle,  thereby  maximizing  the  impact  of  each  intervention.  Through  decentralized  actors  and  a  centralized  critic,  CCDA  balances  localized  decision-making  with  global  coordination,  ensuring  adaptability  to  varying  control  frequencies  while  maintaining  computational  efficiency.  Collectively,  these  advancements  provide  a  scalable  and  adaptive  approach  to  urban  traffic  management,  bridging  the  gap  between  theoretical  models  and  real-world  operational  requirements  while  enhancing  resilience  to  climate  change.
■590    ▼aSchool  code:  0212.
■650  4▼aTraffic  flow
■650  4▼aCommuting
■650  4▼aClimate  change
■650  4▼aRain
■650  4▼aTraffic  control
■650  4▼aMeteorology
■650  4▼aTransportation
■690    ▼a0404
■690    ▼a0543
■690    ▼a0557
■690    ▼a0709
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g87-05A.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360850▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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