Post on 21-May-2020
VARIABLE SPEED LIMITS• OTEC, OCTOBER 2, 2018
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VARIABLE SPEED LIMITS (VSL)
Dennis ONeilJohn Macadam
Title or Event Name (go to Insert > Headers & Footers to change)
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LAKE COUNTY, OHIO DECEMBER 8,2016
o https://www.youtube.com/watch?v=8wmlUh31DwY
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OVER 50 VEHICLES INVOLVED
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OTHER STATES HAVE SIMILAR PROBLEMS WITH WINTER CRASHES
o https://www.youtube.com/watch?v=7ZFG4CBWnyE
o https://www.youtube.com/watch?v=IxlvxvG8zOE
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THE PROBLEM,THE PROCESS, THE SOLUTION
o https://www.youtube.com/watch?v=eNjQRjG6zdk&feature=youtu.be
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TIME LINE OF EVENTS THAT BROUGHT THE SNOW SQUALL WARNING SYSTEM AND VSL’S
o February 16, 2016o Sherriff Dunlap of Lake County calls a
meeting with ODOT after Feb. 10 30+ vehicle crash
o Request message boards to warn motorists of white out conditions
o ODOT places 2 portable message boards on 90 in Lake County
o ODOT starts planning a Snow Squall Warning System
Title or Event Name (go to Insert > Headers & Footers to change)
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MAY 2016 ODOT’S FIRST PLANS
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SNOW SQUALL WARNING SYSTEM $ 258,000
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WINTER OF 2017
o Started installing the Snow Squall Warning System
o Placed portable message boards on 90
o Reduced the Speed Limit to 60 from Jan. to mid March.
Title or Event Name (go to Insert > Headers & Footers to change)
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SNOW SQUALL WARNING SYSTEM MARCH 2017
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Placed 3 DMS’sAdded Visibility Sensors to the RWIS
Added 3 CCTVs
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EVENTS LEADING UP TO VSL’S
o Letter from the Lake County Sherriff requesting VSL’s.
o ODOT working with the Legislature to get Variable Speed Limit approved.
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ORC 4511.21 SPEED LIMITS - ASSURED CLEAR DISTANCEEFFECTIVE 6/30/2017
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(3) For purposes of the safe and orderly movement of traffic upon any portion of a street or highway under the jurisdiction of the director, the director may establish a variable speed limit that is different than the speed limit established by or under this section on all or portions of interstate six hundred seventy, interstate two hundred seventy-five, and interstate ninety commencing at the intersection of that interstate with interstate seventy-one and continuing to the border of the state of Ohio with the state of Pennsylvania. The director shall establish criteria for determining the appropriate use of variable speed limits and shall establish variable speed limits in accordance with the criteria. The director may establish variable speed limits based upon the time of day, weather conditions, traffic incidents, or other factors that affect the safe speed on a street or highway. The director shall not establish a variable speed limit that is based on a particular type or class of vehicle. A variable speed limit established by the director under this section is effective when appropriate signs giving notice of the speed limit are displayed at the location.
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PLANNING PHASE: FIRST PROPOSAL FOR VSL’S
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PLANNING PHASE: 5-26-18
19 VSLs5 CCTVs2 DMSs4 Radar Detectors
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DESIGN PHASE:
o Scope Complete 5/9/17o Authorized Design Consultant
5/11/17o Plan Package received 7/3/17o Sale 8/24/17 , $1.46M + $520,00
ODOT provided.o Begin Construction, 9/1/17o End Construction, 10/31/18
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13 SITES ON I-90
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PLANS
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ODOT AND CONTRACTOR ITEMS
o ODOTo VSLo DMSo RWIS updateso Cabinetso Cameraso Power Service w/
power co.o Beams state
contract
o Contactoro Installationo Trencho CCTV poleso Everything else
to make the system work
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CONSTRUCTION
o Interim completion Nov. 15, 2017. VSL signs did not arrive until mid Jan 18.
o Power and communication cables
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ODOT PUT OUT 8 VSL TRAILERS FOR THE WINTER OF 18.
Controlled from the TMC
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PERMANENT VSL SIGN
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CONSTRUCTION: VSL’S UP JULY
WHITE BACKGROUND, BLACK NUMERALS
VISIBILITY OF THE VSL
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CCTV, August.
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Polecrete
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70’ CONCRETE POLE
HOLLOW INSIDE
CCTV
PUBLIC SERVICE ANNOUNCEMENT