670 SmartLANE Implementation - Amazon Web Services · 670 SmartLANE Implementation 9/28/17 Dave...
Transcript of 670 SmartLANE Implementation - Amazon Web Services · 670 SmartLANE Implementation 9/28/17 Dave...
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Ohio Department of Transportation
w w w. t r a n s p o r t a t i o n . o h i o . g o v
John R. Kasich, Governor • Jerry Wray, Director
670 SmartLANE Implementation
9/28/17Dave Holstein, P.E., Office of Roadway Engineering
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How We Got to HSR
ODOT Conducted State Wide ATDM Study of All Freeway Corridors:
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How We Got to HSRATDM Strategies Considered for Each Corridor:
• Ramp Metering• Hard Shoulder Running (HSR)– Busses Only• Hard Shoulder Running (HSR) – Mixed Traffic• Dynamic Merge Control• Variable Speed Limits/Speed Harmonization• Choice Lanes• HOV Lanes• HOT Lanes• Dynamic Lane Assignment• Contra-flow Lanes
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Pote
ntia
l Har
d Sh
ould
er R
unni
ng
Cor
ridor
s
Winner!!
Boiled Down ATDM Study Into 4 Possible HSR Pilot Locations:
Chose HSR Pilot on I-670 (EB ONLY) Due to it’s Physical Attributes and Concentrated Hours of Congestion
Columbus Cincinnati
I-670 EB
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5-6PMMay-October 2015 (Tues-Thurs), Average Speed of All Lanes
Traditional Projects Underway
Acute Congestion – Only 2 Hours Per Day
HSR
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Interchange Weave Needs Fixed for I-670 EB HSR to Work Best
HSR
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Hard Shoulder Running
9 full matrix signs – Variable Speed Limits – Controlled by TMC
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Hard Shoulder Running
Geometrics & Considerations4’ 12’ 12’ 12’ 10’11.5’
Smar
t La
ne/S
houl
der
New Typical Section• Reduced Outside Shoulder from 12’ to 10’ in places. Shifted ex. lanes out;• Resurfacing to provide new lane location striping (no grinding of markings);• Resurfacing to relocate pavement crown to accommodate lane shift;
Checks/Challenges• Super elevation correction putting traffic on former inside shoulder;• Truck tracking of narrower lane;• Drainage/hydraulic spread on reduced shoulder area (we added 16 inlets);• How is best way to get OUT of the HSR lane!!!!! (more on that later);• Gantry Placement – cohabitation with existing signs
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CostCosts: $52M• $35M – Interchange Weave (Separate but related problem that needed fixed)• $3.5M – Bridges (Unrelated to HSR – Coincidentally Needed Maintenance Work)• $11M – ITS• $2.5M – Resurfacing/Drainage
Total = $52M
Cost to provide traditional widening for extra lane + shoulder at least $25M additional compared to the HSR option (R/W, Structures, Interchanges).
HSR Specific Costs
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Benefits• “Extra” capacity only when needed (4-6P).
Other 22 hours retain use of shoulder;
• Travel time reduction of 33%-45%
• Avoids impacts to neighborhoods and interchanges;
• Faster project delivery than widening
ATDM 2016
Design & PI 2017
Sale 2018
End Construction 2019
WsDOT Crash Experience on US-2 HSR
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HSR Lane – Termination
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Smart lane/Shoulder New Perm. Lane
Existing Lane
New Perm. Lane
Smart Lane/Ex. Shoulder
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Public Involvement
1• Targeted Outreach & Feedback• Law Enforcement, Local Govt., ODOT Operations
2• NEPA Public Involvement• Public Education on Concept
3• Construction Outreach – MOT & Continuing
Reinforcement after Opening Day
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Operations
System StartupVariable Speed LimitMaintenance
Inclement WeatherLaw EnforcementIncident Management
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System Startup
Daily Sweep Prior to Opening – Visual & Physical
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Variable Speed Limit
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Maintenance & Inclement Weather
Shoulder will be treated as a lane.Plow/brine frequency will be increasedSnow storage may require closure of
shoulder until gang plowing can move it Signs have rear catwalk access.
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Law Enforcement
Speed limit changes will be loggedMaintaining the right shoulder will be important for enforcement, incident accessOngoing discussion with CPD, Columbus Prosecutor
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Incident ManagementA dedicated operator will have information collected by the CCTV and other sensors, and will work with Law Enforcement to open/close lanes and slow traffic in advance of an incident.