Corridor Management Planning in California
description
Transcript of Corridor Management Planning in California
![Page 1: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/1.jpg)
Corridor Management Planning in California
Jeff X. BanCCIT, UC-Berkeley
Rensselaer Polytechnic Institute (RPI)
![Page 2: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/2.jpg)
Overview
• Motivation for CMP
• Demo Studies in California
• Challenging Issues
• Percentile-based Methods for Performance Assessment and Bottleneck Calibration
• Current Progress and Expected Outcome
![Page 3: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/3.jpg)
The corridor system management plan is an evolving effort that is consistent with a maturing transportation system
![Page 4: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/4.jpg)
Motivation
• Problems of existing four-step planning process– Static– Can not evaluate various ITS strategies and some of
the operational improvements
• Proposed corridor management plan– A method that integrates detailed operational
analysis into traditional four-step planning process– Can capture detailed dynamics of the system by
using microscopic traffic simulation– Can evaluate both ITS strategies and operational
improvements
![Page 5: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/5.jpg)
Project Overview
• Goal: – To incorporate detailed performance measurement
and operational analysis into the traditional corridor planning efforts.
• Outcome: – A template for Caltrans to use in corridor planning
efforts that will integrate both planning and operations
– To help recommend the most effective improvement strategies.
• Major Tool:– PeMS (http://pems.eecs.berkeley.edu/Public/)– Microscopic Traffic Simulation (Paramics)
![Page 6: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/6.jpg)
Role of Micro-Simulation in CMP
Corridor Selection Data Collection
Corridor Performance Assessment
Base-Year Simulation Model Development
Evaluation of Future-Year Improvement Strategies
Final Recommendations
Paramics
![Page 7: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/7.jpg)
Demo Project – I880
37 miles
157 actuated signals
25 fixed-time signals
56 ramp meters (143 metered lanes)
![Page 8: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/8.jpg)
Demo Projects – SR41 & I5
SR41
16 miles
99 traffic signals
15 ramp meters
I5
30 miles
96 ramp meters
120 signals (actuated)
![Page 9: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/9.jpg)
Simulation Framework Development
I880 I5 (on-going)
![Page 10: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/10.jpg)
SR41 Paramics Network
![Page 11: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/11.jpg)
Technical Challenges
• Data Collection– Highway: PeMS– Arterials: Field Data Collection
• Data Consistency• Representative Day• Bottleneck Calibration in Simulation• Percentile-Based Methods for Performance
Assessment and Bottleneck Calibration
![Page 12: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/12.jpg)
Bottleneck Calibration in Simulation
• Why Percentile-Based Method?– Need an intelligent way to utilize available data (for
multiple days) in the near future– No typical or representative day for many
congested urban corridors
• Probability of BN OccurrenceTtNiptivtivP p ,,1,,,1,)),(),(( p-th percentile speed
![Page 13: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/13.jpg)
13
Speed Contour Map
IncidentAverage
No-Incident 15%
50% 85%
![Page 14: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/14.jpg)
Binary Speed Contour Maps
Vth = 35mph
Observed Data Simulation Data
N
iii
T
trs
N
iii
T
trs
xxtiBStiBS
xxtiBStiBSC
1 1
1 11
)}())],(),([{(
)}())],(),([{(
C1 = 90.5%
Vth = 35mph
Overlapping Area Union Area
![Page 15: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/15.jpg)
15
I-880 NB Speed Contour Maps
Observed Data
Simulation Data
![Page 16: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/16.jpg)
16
I-880 NB Binary Speed Contour Maps
• C1= 24.2%
Observed Data
Simulation Data
![Page 17: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/17.jpg)
Current Progress (The Three studies)
• I-880– The base year micro-simulation model
development is completed; Improvement scenario evaluation is near completion.
• SR-41– The study was completed in June of 2007; A final
report was submitted and under review.
• I-5– The development of the base year model is
completed; Future year evaluation is underway.
![Page 18: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/18.jpg)
Future Year Improvements for SR-41
• Short-term (2005)• Medium-term (2010)• Long-term (2025)• Long-term with HOV (2025)
![Page 19: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/19.jpg)
Results of Future Year Improvements
Average Freeway Speed (PM)
![Page 20: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/20.jpg)
Current Progress (Guideline Development)
• The project has been aligned with the statewide Corridor System Management Planning (CSMP) activities.– Development of guideline template for
conducting CSMP in general– Development of “Cookbook” on what steps
need to be performed to conduct CSMP by Caltrans Districts
![Page 21: Corridor Management Planning in California](https://reader036.fdocuments.in/reader036/viewer/2022070410/568146b8550346895db3e19e/html5/thumbnails/21.jpg)
Acknowledgement