Operational Effect of Allowing Single Occupant Hybrid Vehicles into High Occupancy Vehicle Lanes Chris Breiland Fehr & Peers Associate Lianyu Chu, Hamed.

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Presentation transcript:

Operational Effect of Allowing Single Occupant Hybrid Vehicles into High Occupancy Vehicle Lanes Chris Breiland Fehr & Peers Associate Lianyu Chu, Hamed Benouar California Center for Innovative Transportation (CCIT) UC Berkeley

 Energy Use/Air Quality Issues  Increased Vehicle Miles Traveled  Antipathy Toward HOV Lanes  Hybrid Hype Origins of “Hybrid-HOV” Laws

SAFETEA-LU Requirements –States can allow energy efficient, clean air SOVs in HOV lanes –No operational degradation Policy Specifics

Implemented prior to passage of SAFTEA-LU Different definition of HOV lane degradation –Primarily density/LOS based versus speed based Policy Specifics - California AB 2628

Hybrid Population Data Policy Design scenario Estimate hybrid demand Select study site Build micro-simulation model Calibrate micro- simulation model Run simulation for each scenario Performance measures Estimate SOV / HOV demand Planning model Compare simulation results Policy Implications Methodology

Study Scenarios Baseline: Existing Conditions Scenario 1: Existing Hybrid Population Scenario 2: 50,000 Hybrid Checkpoint Scenario 3: 75,000 Hybrid Maximum Scenario 4: Eight Percent Hybrid Share Scenario 5: Nineteen Percent Hybrid Share

Irvine, CA –Highly Detectorized –Fairly Busy –Variety of HOV Lane Geometries Source: Google Maps Study Location

Paramics Simulation Model

Model Calibration / Validation

Based on California Law and Virginia HOV Task Force Report –HCM 2000 Level of Service based on density –Change in HOV lane travel time –HOV lane flow rates Performance Measures

Results

No significant degradation of HOV lane operations in study area –Flows on SB I-5 in Santa Ana reached 1515 vph Results do not preclude degradation on other facilities in the state or country Conclusions

Policy may be implemented without widespread HOV lane degradation Hybrid sales strong “Take away” problem Virginia law set to expire on July 1, 2006 Phase in toll lanes Better use of HOV lanes HOT lane Priority-based HOV operation Policy Implications

Questions?