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presented to
presented by
Cambridge Systematics, Inc.
CA-VIUS Overview, Lessons Learned, & Initial Results
TRB Innovations in Freight Data Workshop
Jim Brogan
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CA-VIUS Overview
Notable Approach Elements
Lessons Learned
Results to Date
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Today’s Agenda
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CA-VIUS Overview
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• Statewide truck survey
• Physical and operational characteristics of trucks operating in California
• Web-based survey methods and GPS
• Replaces (discontinued) Federal VIUS
• Critical in helping Caltrans make more informed infrastructure and operational decisions
Why? What?
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Notable Approach Elements Two-Tailed Population Definition
California Based Trucks
IHS/Polk
Out of State
Trucks
IRP Clearinghouse for California
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Notable Approach Elements GPS/OBD
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Parameter Included
in CA-VIUS Raw Data
provided to Caltrans
Trip date/time/duration ✓ ✓
Trip distance ✓ ✓
Latitude/longitude ✓ ✓
Trip fuel usage ✓ ✓
Idling percentage ✓
Idling fuel usage ✓
Engine on-hours ✓
GHG emissions ✓
Acceleration and braking scores ✓
Speed ✓ ✓
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Notable Approach Elements Incentives
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• Cash incentives from $40-$100 per truck
• Separate incentives for GPS devices
• Guide Dogs for the Blind • St. Christopher's Fund • American Cancer Society • Red Cross
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Sharing data with CARB would depress industry participation
Introduce bias by allowing multiple trucks per fleet
Dispersing cash incentives would be an administrative burdensome
GPS/OBD Devices would not be returned
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Lessons Learned What We WERE Worried About
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Extent of IRP population
Truck scheduling and routing for IRP fleets
GPS recruitment/install burden
Incomplete/inaccurate registration information
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Lessons Learned What We SHOULD Have Worried About
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Goal is to collect data from 12,000 trucks
Over 5,650 surveys collected » Average rate: 300 trucks per week
» About 50 GPS trucks being recruited per week
Extensive QA/QC and data analysis underway
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Survey Status Preliminary Results
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Survey Status IRP Trucks Preliminary Results
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Survey Status DMV Trucks Preliminary Results
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Data collection to run through December 2017
Develop Detailed Survey Expansion Techniques » Validate against commodity flow information
Develop Robust Estimates for » Out-of-State Truck VMT
» Commodity Movements
» Payload Factors
» Trip Patterns by Truck Type
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Next Steps
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Questions?
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Contact Us JIM BROGAN
[email protected] (213) 372-3022
ANURAG KOMANDURI [email protected]
(213) 372-3032
KALIN PACHECO [email protected]
(916) 654-6943