Eight state pooled fund study on accommodating oversize overweight vehicles at roundabouts
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Eight-state Pooled Fund Study on Accommodating Oversize/Overweight Vehicles at Roundabouts. Gene Russell, P.E., PhD Professor Emeritus Kansas State University . What’s in a Name ?. Superload ? Permitted Vehicle? Oversize/Overweight Vehicle ? Went with No. 3 and abbreviation “ OSOW ”.

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Eight state pooled fund study on accommodating oversize overweight vehicles at roundabouts

Eight-state Pooled Fund Study on Accommodating Oversize/Overweight Vehicles at Roundabouts

Gene Russell, P.E., PhD

Professor Emeritus

Kansas State University

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


What s in a name
What’s in a Name ? Oversize/Overweight Vehicles at Roundabouts

  • Superload?

  • Permitted Vehicle?

  • Oversize/Overweight Vehicle ?

    Went with No. 3 and abbreviation “OSOW”

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Not your typical “18-wheeler Oversize/Overweight Vehicles at Roundabouts”

T&DI Congress 2014, Orlando, FL


Note the low clearance also Oversize/Overweight Vehicles at Roundabouts

T&DI Congress 2014, Orlando, FL


Think Legos Oversize/Overweight Vehicles at Roundabouts

snables, dollys, jeeps, decks, boosters, etc., combinations haul about all

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30



Study objectives
Study Objectives City, S.D., June 29

  • Overall Paraphrased; accommodate the growing demand for OSOW without having a negative effect on roundabout growth on state highways.

  • Compile current practice and research by states and foreign countries related to effects that OSOW have on roundabout location, design and accommodation. [4Surveys]

  • Fill in information gaps with respect to roundabout design and operations for this class of vehicle[Interviews, emails ]

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


City, S.D., June 29Nots”

  • Not a project to develop design guidelines or recommend design methods

  • Not a project to develop truck routing guidelines

  • Not a project to study states’/legal issues/laws/politics

  • But all are important

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Message
“Message” City, S.D., June 29

  • My opinion--

  • We must do a good job accommodating all trucks on designated routes --

  • And do a good job accommodating OSOW on routes necessary to key industry and the economy

  • Or politicians may do it for us !

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Surveys
Surveys City, S.D., June 29

  • Survey 1: States – general

  • Survey 2: States – specific roundabout questions

  • Survey 3: Industry – Specialized Carriers and Rigging Association (SC&RA)

  • Survey 4: Industry - partnered with American Transportation Research institute ( ATRI)

  • Survey summaries with authors’ comments in final report

  • Detailed survey responses in final report appendices

  • Bothfree on line http://www.ksdot.org/burmatrres/kdotlib2.asp

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


( City, S.D., June 299th of 11)

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Key roundabout concerns
Key Roundabout Concerns City, S.D., June 29

  • Long loads

  • Low-boy clearance (ClearancesNo.1 concern)

  • OSOW riding up on exterior curb

  • Placement of signs and landscaping

  • Concerns about objects in the center island

  • Concern about [self-propelled]farm and emergency response vehicles

  • Final report has 3 appendices with detailed responses/examples on the “concern” issues.

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Roundabout concerns
Roundabout Concerns City, S.D., June 29

  • To summarize, my view: communication is essential !

  • Both within DOT – permitting and design

  • And with industry – 15 [out of 50] responded they interact with OSOW hailers or trucking associations on designs such as roundabouts.

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Some mitigation suggestions 1
Some Mitigation Suggestions-1 City, S.D., June 29

  • Mountable curbing

  • Removable signage

  • Address stationary landscape features

  • Larger radius designs to accommodate longer vehicles-if safety not compromised

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Some mitigation suggestions 2 industry agreed a ll h ave merit
Some Mitigation suggestions City, S.D., June 29 -2 Industry Agreed all Have Merit

  • Wide truck aprons – 12 feet or more with minimum slope and mountable curb

  • Custom or tapered center islands for movements

  • Paved area behind curb for right side off-tracking

  • Installing removable signs and light pole setbacks

  • Allow trucks to cross over median and allow counter flow movement

  • Right turn lanes – sometimes gated

  • Lower curbs

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Miscellaneous ideas
Miscellaneous Ideas City, S.D., June 29

  • Stabilized soil in center island

  • Pass through lanes in center island- gated

  • Completely traversable center islands (like minis)

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Some select examples
Some Select Examples City, S.D., June 29

  • Several more in final report:

  • http://www.ksdot.org/burmatrres/kdotlib2.asp

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Generalized Concept- more paved areas City, S.D., June 29

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30



T&DI Congress 2014, Orlando, FL City, S.D., Jume 30









Truck osow routing
Truck& OSOW Routing City, S.D., Jume 30

  • WisDOT Freight Network (FN)

  • OSOW Check Routes

  • 7 truck configurations

  • Opinion: All transportation agencies should consider

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30




One of dozens using various roundabout dimensions and check vehicles

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Leading to composites for roundabouts of varying dimensions this one for:

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30




Overall general conclusion
Overall General Conclusion City, S.D., Jume 30

  • 1.transportation agencies should conduct a survey to develop a freight network which includes segments where OSOW need to be accommodated, including turning movements and capabilitiesand develop appropriate, state-specific, check vehicles

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Key conclusions from examples
Key Conclusions from Examples City, S.D., Jume 30

  • Wide truck aprons can help in many situations

  • In special cases central island could be all truck apron

  • Central island could be narrowed our tapered for through movements; or have lanes through

  • Allowing contraflow can be cost-effective in some cases

  • Raised curbs should be kept low – suggest 3” max

  • European low but rough truck apron may have merit

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Conclusions from surveys
Conclusions from Surveys City, S.D., Jume 30

  • Ground clearance by low vehicles is a major problem

  • Knowing what OSOW use a particular route and their dimensions and turning characteristics are essential

  • All obstructions need to be considered and some routes may not be suitable

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Message worth repeating
“Message” Worth Repeating City, S.D., Jume 30

  • My opinion--

  • We must do a good job accommodating all trucks on designated routes --

  • And do a good job accommodating OSOW necessary to key industry and the economy

  • Or politicians may do it for us !

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Trains do it
Trains Do It ! City, S.D., Jume 30

TRAINS DO IT

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Pooled fund state sponsors and technical contacts
Pooled Fund State Sponsors; and Technical Contacts City, S.D., Jume 30

  • Connecticut; William Britnell

  • Iowa; Jeremy Vortherms

  • Kansas ( Lead State) ; Steve King (Monitor)

  • Mississippi; Bob Mabry

  • Ohio; James Young

  • Oregon; Rich Crossler-Laird

  • Washington; Brian Walsh

  • Wisconsin; Patrick Fleming/Peter Lynch (UW)

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


Other sponsors
Other Sponsors City, S.D., Jume 30

  • Transoft Solutions; Steven Chan

  • KSUTC; Bobb Stokes

  • MATC; MustaqueHossain

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30



The end
The End City, S.D., Jume 30

  • Questions ?

  • Report and appendices:

  • http://www.ksdot.org/burmatrres/kdotlib2.asp

  • My email: [email protected]

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30


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