2006 GIS-T Symposium Columbus Ohio · 2006 GIS-T Symposium Columbus Ohio ... NE Ohio 12 Snow Plows...
Transcript of 2006 GIS-T Symposium Columbus Ohio · 2006 GIS-T Symposium Columbus Ohio ... NE Ohio 12 Snow Plows...
2006 GIS2006 GIS--T SymposiumT SymposiumColumbus OhioColumbus Ohio
The Ohio Department of TransportationRoad Grip Tester Project
Diana Diana ClonchClonchOffice of Maintenance AdministrationOffice of Maintenance Administration
Snow and Ice CoordinatorSnow and Ice Coordinator
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Friction in Winter Maintenance
Commonly used in the evaluation of airport runways
Available systems were typically expensive and cost prohibitive for road maintenance
Successfully used in other countries for over 20 years within road maintenanceGained serious attention in the US during the early 90’s for use in winter road maintenance
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Applications for Snow and Ice ControlProvides a method to quantify results
A measure of the quality of work performanceAn indicator of the consistency and uniformity of service
Assist with operational decision makingEarly detection of icy spots – treatment implementationEffectiveness/evaluation of treatment selections –treatment adjustments
Advisory information for motoristEarly warnings of icy conditionsAlerts for specific routes/geographical areas
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Project Vision
Real time method to determine friction (grip) before, during and after a stormEarly detection of black ice and frostObjective method to evaluate performancePractical utilization and display with minimal interference to operatorsData transmittal for storage and analysisAdvanced notification for motorist alerts
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Historical Overview
Summer 2001: ODOT contacted Halliday Technologies to investigate measuring road grip.
Increase snowplow operator safety. Improve public safety by helping snowplow operators detect icy conditions.
Spring 2002: ODOT began testing a prototype plow unit2003/2004 Four additional plow units installed2004/2005 Tow Unit Designed and 12 units deployed2005/2006 Equipped outpost fleet – 8 plow unitsCurrently 24 units – 12 tow and 12 snow plow
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Prototype Details
Mounted in the spring of 2002 on ODOT’sPrototype truck.
Truck contained a Force America CommandAll Hydraulic System and a ThomTech GPS System with data collection capabilities.
Prototype contained an in-cab display of 10 green, 10 amber and 10 red lights to indicate friction
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The DisplayLights give the driver an indication of road surface conditions. More lights = more slippery conditions.Display is a voltmeter that reads the voltage from the hub, calibrated for road conditions.Numerical display (for unit calibration) is converted to a friction range
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RGT Ranges
Green - Dry or wet Pavements
Yellow - Partly snow covered
Red - Snow covered or ice
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RGT wheel is at 1.75°Angle
How RGT Works
RGT wheel is at a slight angle to the others.Wheel “scrubs” or is pushed sideways based on road grip conditions.This side force is converted to an electrical signal by the hub.
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How RGT Works Contd…The Display
The Wire
Mobile Data Collector
With GPSThe Hub
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Initial Data Collection & Display
Data collected and stored to a card reader
Downloaded to a database and/or spread sheet and graphed
Mapped using ArcView
Photos and graphics added manually
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Results - Winter 2002-2003During a light morning snow, different traffic volumes were seen to affect the surface friction.
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Black Ice
During the early morning, rain with fallingtemperatures formed a 1/8” to 1/4” ice sheet
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Consistency and Repeatability
Truck 524 - 15 Passes (11/22/04)*began raining SB pass 7
275
300
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350
Pass 1
Pass 2
Pass 3
Pass 4
Pass 5
Pass 6
*Pas
s 7Pass
8Pass
9Pass
10Pass
11Pass
12Pass
13Pass
14Pass
15
OD
OT
Fric
tion
Uni
ts
524 NB
524 SB
*
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Follow Testing – Wet and Dry
Unit 0524 v. Unit 0549Southbound11/19/2004
200
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400
1 2 3 4 5
# of Passes
Avg.
Fric
tiona
l V
alue
s
Unit 0524 WetUnit 0549 WetUnit 0524 DryUnit 0549 Dry
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Comparative Readings
RGT Follow Test 2/3/05, Waverly to Columbus
050100150200250300350400450500
5:33
:35
AM5:
27:4
5 AM
5:24
:15
AM5:
20:4
5 AM
5:17
:15
AM5:
13:4
5 AM
5:09
:05
AM5:
05:3
5 AM
5:02
:05
AM4:
58:3
5 AM
4:55
:05
AM4:
51:3
5 AM
4:48
:05
AM4:
44:3
5 AM
4:41
:02
AM4:
37:3
1 AM
4:34
:01
AM4:
30:3
7 AM
4:27
:01
AM
T ime
050
100150200250300350400450
Unit 560, Ave = 286 Unit 543, Ave = 270*
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Green Range
Date:1-22-2005
Time:10:04 AM
Friction Reading:246
Air Temp:30
Pavement Temp:30
RGT Scale:Green
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Yellow Range
Date:1-23-2004
Time:9:35 AM
Friction Reading:162
Air Temp:8
Pavement Temp:8
RGT Scale:Yellow
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Red Range
Date:1-22-2005
Time:7:57 AM
Friction Reading:49
Air Temp:28
Pavement Temp:28
RGT Scale:Red
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US 33 on 12/22/04Transition Rain to Snow
12/22/2004 - US 33*Pictures are associated w/ colored points
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8:02:05 8:03:55 8:05:45 8:07:35 8:09:25 8:11:15 8:13:05 8:14:55 8:16:45 8:18:35 8:20:25 8:22:15 8:24:05 8:25:31 8:27:21 8:29:11 8:31:01 8:32:51 8:34:41 8:35:59 8:37:49 8:39:39 8:40:57 8:42:23 8:44:13 8:45:15 8:46:33 8:47:35 8:48:45 8:49:31
Fric
tiona
l Val
ues
Franklin-Union County Line
1
2
37
4
8
9
5
6
Union-Logan County Line
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Data Collection Upgrades
Began real-time data collection late January 2005
Data collected for each individual unit and reported real-time to a web site Graphic and tabular display in real-time and playback modes
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Deployment Winter 05/0624 Units
12 Real Time Data Tow Units Three First Team units – Columbus Three Road Crewzers units - ClevelandTwo Maint Admin units – Central OfficeTwo District 7 units – Dayton One District 6 unit – Pickaway CountyOne District 4 unit – NE Ohio
12 Snow Plows Deployed8 District 6 real time units4 District 6 manual units
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Anticipated Outcome
Create a system that detects, records, reports and disseminates informational data regarding low grip areas on road surfaces
Explore integration with other AVL applications and RWIS
To provide a process for integration of this data into an early alert and advanced notification system for:
Winter Maintenance ActivitiesMotorist AlertsOhio Transportation Information System, OTISTreatment ImplementationTreatment Adjustments Performance Evaluations
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Most Recent Event
First Day of SpringMarch 21, 2006
Grove City Outpost – Plow Units
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Questions - Discussion
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Diana Clonch(614) 644-7159