Multimodal Corridor System Management – Incorporating Analysis of Transit, Demand Management Programs and Operational Strategies

Presented by

Bill Loudon, DKS Associates

May 11, 2011May 11, 2011

Presentation Outline

1. Overview of the Project

2. Modeling Approach

3. Testing of Scenarios

4. Results and Conclusions

Regional Context

The US-101 Corridor

Project Objectives

To identify the location and characteristics of bottlenecks

To develop tools for the evaluation of delay-reduction strategies

To evaluate the delay-reduction potential of multi-modal strategies in in a complex urban corridor

Santa Barbara Bottlenecks

7

Ventura Bottlenecks

8

2023 Delay as a Percentage of VHT

 

AM Peak PM Peak

NB SB NB SB

Santa Barbara County 22.3% 12.6% 35.1% 29.7%

Ventura County 17.3% 26.0% 32.1% 48.0%

Existing and Planned Programs

Local and Express Bus Transit Limited Intercity Passenger Rail

Service Limited Park and Ride Lots Demand Management Programs Pedestrian and Bicycle Facilities

Additional Transit and TDM Options Considered

Increased Local Bus Service Increased Express Bus Service in

HOV Lanes “Commuter Friendly” Intercity Rail

Service Expanded Park and Ride Expanded Demand Management

Programs

Stakeholder Participation

State Department of Transportation Metropolitan Transportation

Organizations (MPOs) County Transportation Commissions Cities and Counties Transit Providers Air Quality Management District Community Representatives

Stakeholder Committees

Transit and Demand Management Traffic Operations Modeling

Modeling Approach and Tools

Corridor Network in Santa Barbara County

Corridor Network in Ventura County

Hybrid Simulation Representation of the Network

Supplemental Analysis Tools

Pivot Point Transit Analysis Model TDM Effectiveness Model Freeway Service Patrol Effectiveness

Model

Scenarios for Testing

1. Transit and TDM Enhancement

2. Ramp Metering

3. Minor Roadway Capacity Enhancements

4. Incident Management

Ventura AM Northbound

20

Santa Barbara AM Northbound

Santa Barbara AM Northbound Baseline 2023

Transit and TDM

Ramp Metering

Minor Physical Improvments

25

Transit and TDM - Conclusions

Overall benefits can be significant in peak commute direction

VMT Delay

Santa Barbara County

5% 53%

Ventura County

4% 30%

PM Peak Period Southbound ReductionPM Peak Period Southbound Reduction

26

Ramp Metering - Conclusions

Can reduce delay when congestion is not severe

 

AM Peak PM Peak

NB SB NB SB

Santa Barbara County 8.9% -9.8% 12.8% 12.2%

Ventura County 7.2% 6.3% -1.6% -1.6%

Peak-Period Delay Reduction 2023

27

Safety Benefits of Ramp Metering

Ramp DelayRamp Delay

Non-recurring Delay

Non-recurring Delay

Mainline Recurring Delay

Mainline Recurring Delay

0%

20%

40%

60%

80%

100%

Without Metering With Metering

Rel

ativ

e D

elay

28

Minor Capacity Improvements - Conclusions

Can significantly improve the productivity of the freeway

 

AM Peak PM Peak

NB SB NB SB

Santa Barbara County 24% 8% - 36%

Ventura County 24% 59% 30% 24%

Peak-Period Delay Reduction 2023

29

Freeway Service Patrol - Conclusions

Freeway Service Patrol Benefits 2023

Delay Savings

VHT/Year

Benefit/Cost Ratio

Santa Barbara County 206,000 11.9

Ventura County

207,000 10.8

Conclusions

Consideration of multimodal management options was important to the US 101 CSMP

An analytical method for testing multimodal options could be integrated into the modeling process

The involvement of stakeholders throughout the process was important to the testing and integration of multimodal strategies