Gene Russell, P.E., PhD Professor Emeritus Kansas State University

Gene Russell, P.E., PhD Professor Emeritus Kansas State University
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 ? 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”
T&DI Congress 2014, Orlando, FL

Note the low clearance also
T&DI Congress 2014, Orlando, FL

Think Legos snables, dollys, jeeps, decks, boosters, etc., combinations haul about all 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S. D
2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., June 29

Study Objectives 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 [4 Surveys] Fill in information gaps with respect to roundabout design and operations for this class of vehicle[Interviews, s ] 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

“Nots” 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” Or politicians may do it for us ! 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 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 Both free on line 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

(9th of 11) 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

Key Roundabout Concerns
Long loads Low-boy clearance (Clearances No.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 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
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 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 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 Several more in final report:
2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

Generalized Concept- more paved areas

T&DI Congress 2014, Orlando, FL

Truck& OSOW Routing 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

2014 ITE Joint Western/Midwestern meeting, rapid City, S.D., June 30

One of dozens using various roundabout dimensions and check vehicles

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

Overall General Conclusion
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 capabilities and develop appropriate, state-specific, check vehicles 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

Key Conclusions from Examples
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
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
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

Pooled Fund State Sponsors; and Technical Contacts
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 Transoft Solutions; Steven Chan KSUTC; Bobb Stokes
MATC; Mustaque Hossain 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

The End Questions ? Report and appendices:
My 2014 Joint Western/Midwestern ITE District Meeting, Rapid City, S.D., Jume 30

Gene Russell, P.E., PhD Professor Emeritus Kansas State University

Similar presentations

Presentation on theme: "Gene Russell, P.E., PhD Professor Emeritus Kansas State University"— Presentation transcript:

Similar presentations

About project

Feedback

Log in

Auth with social network:

Gene Russell, P.E., PhD Professor Emeritus Kansas State University

Similar presentations

Presentation on theme: "Gene Russell, P.E., PhD Professor Emeritus Kansas State University"— Presentation transcript:

Similar presentations

About project

Feedback