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TTI WWD Forum – May 9, 2018
ACTIVE WWD SIGN SYSTEMS
John Gianotti, P.E.San Antonio District - TransGuide
TTI WWD Forum – May 9, 2018
In Memory of Stephanie Brown
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SAPD OfficerStephanie Brown(27 yrs old) killed by a WWD in the line of DutyMarch 15, 2011
TTI WWD Forum – May 9, 2018
2017 GIS Density Map
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TTI WWD Forum – May 9, 2018
• 72% of the wrong way driver events occur at night• The flashing LED lights will be visible from a greater distance
Active/Illuminated Signing : LED & Blank–out Wrong Way Signs
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Flashing LED WW sign(TAPCO)
Blank-outWW Sign(SESA) Flashing LED
WW sign(TraffiCalm)
TTI WWD Forum – May 9, 2018
Exit Ramp signs
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ExistingSigns
New LED WW signs
TTI WWD Forum – May 9, 2018
Exit Ramp signs
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TTI WWD Forum – May 9, 2018
Exit Ramp Signs
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Exit Ramps – TAPCO Radar
TTI WWD Forum – May 9, 2018
US 90 EB exit to Callaghan (TraffiCalm)
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TTI WWD Forum – May 9, 2018
WWD on 3/30/18
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TTI WWD Forum – May 9, 2018
New US 90 WWD System
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TTI WWD Forum – May 9, 2018
New US 90 WWD system
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Confirmer radar
TTI WWD Forum – May 9, 2018
WWD Ramp Detection system used in Ft. Worth
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TTI WWD Forum – May 9, 2018
Mainlane Active signs
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TTI WWD Forum – May 9, 2018
2012-14 TTI WWD Study – DMS WWD Warning Message
Recommended warning messages
> 15 characters per line < 15 characters per line Activate beacons when warning message displayed
– Catch attention of motorists– Distinguish from other messages
What if the sign does not have beacons?– Can flash entire message– Do not flash one line
Post when wrong way driver reported Displayed in both directions of travel
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WARNINGWRONG WAY DRIVER
REPORTED
WARNINGWRONG WAY VEH
REPORTED
TTI WWD Forum – May 9, 2018
DMS Wrong Way Driver Warning Message
No lane instructions given
Message displayed first, then operator searches for vehicle using cameras
Displayed Until:1) WWD stopped, 2) Accident found, or 3) SAPD cancels Alert
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TTI WWD Forum – May 9, 2018
How are we doing? Nov. 2012 success story
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TTI WWD Forum – May 9, 2018
US 281 Pilot Project
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TTI WWD Forum – May 9, 2018
US 281 Pilot Project - 36 Month Results
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TTI WWD Forum – May 9, 2018
ACTIVE WWD SIGN SYSTEMSJohn Gianotti, [email protected] Antonio District - TransGuide
