Connecting Fleets using On- Board Units (OBUs) and Roadside - - PowerPoint PPT Presentation

Connecting Fleets using On- Board Units (OBUs) and Roadside Equipment (RSEs)

Asfand Siddiqui Division of Research, Innovation and System Information California Department of Transportation (Caltrans)

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Presentation Map

• RSU Installation Efforts
• Palo Alto Test-Bed
• San Diego Area
• Orange County Area
• OBU Installation Efforts
• Valley Transport Authority TSP
• Bus on Shoulder
• Lessons Learned

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Palo Alto Test Bed / RSU

• Established in 2005
• Caltrans, PATH and MTC Partnership
• Sixteen existing intersections
• Broadcasting SPaT, MAP, RTCM and RSM

Messages

• Accepts BSM and Service Request Message

(SRM)

• SCMS implementation in progress
• Fifteen additional intersections are planned

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Palo Alto Test Bed / RSU

• With 31 consecutive

intersections, the total length of the test-bed will be about 7 miles long

• Applications under testing

Phase

• Red Light Violation

Warning over Cellular

• Conditional TSP for

VTA (DSRC based)

• Transit Eco Approach

and Departure (DSRC based)

• Reduced Speed Zone

and Lane Closure Warning (DSRC based)

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San Diego Area / RSU

• The San Diego AV

Proving Ground

• Collaboration between

SANDAG, Caltrans and City of Chula Vista

• Consists of:

I-15 Express Lanes SR 125 City of Chula Vista

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San Diego Area / RSU

• 25 RSU are planned to be installed by

June 2020 on 1-15.

• 10 OBUs are planned to be installed on

Caltrans maintenance vehicles.

• Planned Applications
• V2X Queue Warning
• V2X Expanded CMS Message

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Orange County Area / RSU

• Caltrans District 12
• 120 RSUs are in design

stage.

• All CCTV locations on the I-

5, SR57 and SR91 will be installed with 120 RSUs.

• 52 Additional RSUs will be

installed on various intersections in district 12.

• Completion is Sep-Oct 2020
• Applications are in initial
• stages. BSM acceptance is

planned.

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OBU Efforts / Transit Signal Priority (TSP)

• Valley Transportation

Authority (VTA) and Caltrans joint venture

• Buses on Route 22 will

be equipped with OBUs that will send the SRM to RSU

• TSP is conditional. The

RSU will give priority based on predefined policy.

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OBU Efforts / Bus on Shoulder

• Implementation in progress on SR-94 west of highway

805.

• Sand Diego Metro buses will be equipped with OBUs to

communicate with the On-Ramp RSU to hold the traffic while the bus passes the conflict zone.

• OBUs have been installed on the busses.
• RSU design is complete.
• Ramp controller software upgrade is in process.
• The system will work only at the commute times or if the

traffic on the GP lanes is running below the 35 MPH.

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Understanding Upgrade

• 2070 Software updates
• How to connect with the DSRC radio
• Ramp Metering software updates for bus on

shoulder application

• 2070 Hardware
• Migration from OS-9 to Linux
• Two CPU solution

Caltrans Spec is ready to be published

• Constricted Conduits

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Understanding Upgrade

• Backhaul availability
• The curious case of road barrier
• DSRC vs C-V2X

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Questions