June 5 2014 Presented By Dan Lukasik PE Parsons ATM History in California SR14 Parttime HOV SR118 Parttime use of shoulder as HOV lane Freeway to Freeway connector metering Adaptive Traffic Signal Control ID: 787770
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Slide1
ATM in CaliforniaITS VirginiaJune 5, 2014Presented By Dan Lukasik, P.E.Parsons
Slide2ATM History in CaliforniaSR-14 Part-time HOVSR-118 Part-time use of shoulder as HOV laneFreeway to Freeway connector meteringAdaptive Traffic Signal ControlSystem Wide Adaptive Ramp Metering (SWARM) In Los Angeles
Dynamic Lane Management Project at I-110/5 Interchange (Junction Control)
2
Slide3Current ATM ProjectsIntegrated Corridor ManagementI-880 CorridorSR101 CorridorSan Diego ICMSI-210 (Connected Corridors)South Bay Dynamic Corridor Congestion Management (DCCM)I-80 ICM CorridorI-105 ATM Feasibility Study
3
Slide4I-80 ICM Project Overview4
4
Slide5The ProblemOver 20,000 vehicle-hours of delay per day Inconsistent level of service (C to F) Variable speeds (stop & go to 65 mph) High incident rates: over 2,000 incidents annually Un-reliability of travel (20 to>60 min)5
Slide6The SolutionCreate a Well Balance System Maintain Optimal Operational Viability Proactively Avoid Flow Breakdown Detect and Respond to Congestion Events Faster Improve Safety Manage Congested Flow When it Does Occur Promote Transit Ridership and Mode Shifts Clear Local Arterials from Diversion
6
Slide7System Implementation7
$5.9M
$32.2M
$2.9M
$24.3M
unfunded
$5.8M
$8.0M
Total Project Cost: $79.1M
Slide8Adaptive
Ramp Metering
2
Lane Management System
1
I-80
ATM Strategies
3
Variable Speed Assignment Signs (VASS)
4
Queue Warning
8
Slide9I-80 ATM Strategies9
Dynamic Lane Management
Variable
Speed Advisory Signs
Active Rerouting (Trailblazers)
Real-time
Signal Adjustments (flushing)
Adaptive
Ramp Metering
Active Traffic Management
Transit
Signal Priority
Mode/Route
Shift Choice
Advisories
511 Information
Dissemination
Expanded
Traffic Signal
Coordination
Other ICM Strategies
Slide10Key I-80 ICM StrategiesAdaptive Ramp MeteringFuzzy Logic AlgorithmActive Traffic ManagementQueue WarningVariable Advisory SpeedIncident ManagementLane ManagementResponse PlansArterial ManagementArterial Trailblazer SignsSignal Timing Flush Plans
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Slide11AlgorithmsAdaptive Ramp MeteringSWARMHERO/ALINIEAStratified ZoneFuzzy LogicVariable Speed Advisory SignsThe VASS algorithm will use speed smoothing in its algorithmThe VASS speed smoothing algorithm will be based on an 85th
percentile speed calculationThe speed smoothing algorithm will be automatic with operator monitoring and override features.
Slide12System IntegrationIntegration of various agency subsystems working togetherArterialFreewayTransitEmergency RespondersIncident Response LUSVASS
Slide13District 7 ATM Feasibility StudyConduct literature reviewScreen and evaluate suitable freeway corridors and ATM strategiesDevelop and calibrate analysis tools
Use tools to evaluate the corridor-wide impacts and benefits of ATM strategiesDevelop implementation plan for ATM strategies in the selected ATM corridor
Slide14Task 2: Literature ReviewObjective Synthesize National and international experience with ATM strategiesPotential Benefits (Empirical observations of impacts)Deployment Considerations (Factors contributing to or diluting success of deployment)
Supplement with State and local findings wherever available Supports the identification of likely range of impacts to be carried forward into Task 4
Slide15Task 2: Literature Review
Slide16Task 3 - ATM Corridor Assessment - Overview16
Evaluation Criterion
Assessment Rating
I-210 (A)
12mi
SR-134 to I-605
I-210 (B)
15mi
I-605 to Padua Ave
I-710
21mi
Long Beach to Alhambra
I-105
17mi
Sepulveda
Blvd
to I-605
I-405 south
13mi
I-605 to I-110
I-405 mid
8mi
I-110
to I-105
I-405 north
18mi
I-105
to US-101
I-5
10mi
I-605 to SR-60
Congestion and Safety
Peak
period
congestion
levels
High
High
High
Very High
High
Very High
Oversaturated
Oversaturated
Accident rate
Moderate
Moderate
Moderate
High
High
High
High
Moderate
Congestion variability
High
High
High
High
High
High
High
High
Characteristics
Truck traffic
Moderate
Moderate
High
Moderate
Moderate
Moderate
Moderate
Moderate
Diversion potential
Very Good
Very Good
Good
Very Good
Moderate
Poor
Moderate
Good
Shoulders available?
Moderate
Moderate
Poor
Good
Moderate
Moderate
Poor
Moderate
HOV/Managed lanes available?
Good
Good
Poor
Good
Good
GoodGoodPoorRamp/arterial storageGoodGoodGoodExcellentGoodModerateGoodPoorITS InfrastructureHighway detection/surveillanceGoodGoodGoodGoodGoodExcellentGoodGoodArterial detection/surveillanceNoneNoneNoneNoneNoneNoneNoneNoneRamp meteringGoodGoodGoodGoodGoodExcellentExcellentGoodTraveler information disseminationGoodGoodPoorGoodGoodGoodGoodGoodInstitutional CoordinationAgency coordination requiredModerateModerateHighHighLowModerateLowModerateAvailability of ATM ChampionUnknownUnknownUnknownUnknownUnknownTorrance unsupportive?LA or Inglewood?UnknownAvailable Analysis ToolsMesoscopic SimulationNoNoAIMSUN-soonAIMSUN-soonNoAIMSUN-soonNoNoMicroscopic SimulationVISSIMVISSIMAIMSUN-soonAIMSUN-soonParamicsAIMSUN-soon?ParamicsParamicsOverall Potential Opportunity
Slide17ATM Assessment Framework Deficiency Mapping
Slide18ATM Assessment Framework Detail Sheets
Slide19Task 5 - Evaluation of ATM Corridor/LocationPerformance measuresAnalysis scenariosWith/without optimal ATM combinationAssemble dataDevelop/modify analysis toolEvaluate impacts of ATM and estimate benefit-cost
Develop scope for ATM project (concept level design, capital costs, signing, operating plans)
Develop implementation
plan (outreach & education, partnerships, marketing
Develop O&M plan (costs & risks)
Slide20Queue Warning Example:
I-105 EB approaching
I-110 Interchange
X
SPEED LIMIT
35
SPEED LIMIT
35
Corridor-wide queue warning CMS spaced approx. every ½ to 1 mile
Roadway curvature & frequent speed drops due to I-110 Interchange ahead make this a good location for queue warning
STOPPED TRAFFIC AHEAD
Slide21Dynamic Lane Management:I-105 EB approaching I-110
Interchange
X
SPEED LIMIT
35
SPEED LIMIT
35
Corridor-wide dynamic lane management approx. every ½ to 1 mile
Roadway curvature and frequent speed drops due to I-110 Interchange ahead make this a good location for queue warning
STOPPED TRAFFIC AHEAD
Slide22Hard Shoulder Running Example:I-105 WB approaching Long Beach Blvd
SPEED LIMIT
45
SPEED LIMIT
45
Corridor-wide lane control gantries spaced approx. every 1 mile
Video incident detection to verify shoulder unobstructed
USE HARD SHOULDER
Slide23Active Routing Example
Primary Route
Alternate Route
Diversion Routing
Msg
(Type 2 – DMS)
HAR Messaging (Incident
& Alt. Routing
)
Adjust Ramp Metering Rates
Adjust Signal Timing Plans
Incident & Diversion Routing
Msg
(Type
1 – DMS)
Slide24Variable Speed Limit Example:I-105 EB
Approaching I-110 Interchange
SPEED LIMIT
35
SPEED LIMIT
35
Corridor-wide variable speed limit signs spaced approx. every ½ to 1 mile
Speed harmonization via VSL can be congestion-, incident-, and weather-responsive
STOPPED TRAFFIC AHEAD
Slide25Dynamic Junction Control Example:
I-105 EB / I-710 Interchange
Demand responsive lane management for key interchange and ramp bottleneck locations
“Smart Studs“/
Channelizers
Slide26Predictive Traveler Information Ex:I-105 WB Approaching Long Beach Blvd
DOWNTOWN 55
LAX 30
GREEN LINE LAX 25
Predictive traveler information, generated from historical data and real-time modeling, can be displayed on CMS signs in advance of major decision points (e.g., junctions, transit stops). It can also feed into multimodal DSS.
Slide27Active Parking Management Example:Norwalk Green Line Station
SPACE AVAIL.
EAST LOT FULL
WEST LOT 250
Active parking management can provide travelers real-time parking availability information at the facility or on a mobile application. Parking availability can also be integrated into multimodal decision support systems.
Slide28Dynamic HOV Example:
I-105 WB Approaching Long Beach Blvd
SPEED LIMIT
45
SPEED LIMIT
45
COLLISION AHEAD
HOV LANE OPEN TO ALL VEHICLES
Corridor-wide
dynamic HOV CMS at each HOV lane entrance location
X
Dynamic HOV can be used to increase occupancy requirements (e.g., from 2 to 3+) in response to congestion in lane or to open the lane to all vehicles in response to roadway incidents blocking GP lanes
X
COLLISION AHEAD
HOV LANE OPEN TO ALL VEHICLES
Slide29Thank You!Dan Lukasikdaniel.lukasik@parsons.com
714-562-5725