AASHTO SCOHT C HALLENGES : R OUNDABOUTS Peter Lynch UW TOPS Lab - Madison WI

O VERVIEW  My Background  WisDOT  Minnesota Wisconsin Truck and Roundabout Study  Take-aways  Things to consider regarding trucks and specialized transport when installing roundabouts and other innovative intersections and interchanges

B ACKGROUND  3 Years driving trucks  5 Years at Michigan DOT  1 Year private sector  4 plus years at UW TOPS Lab working on site at WisDOT in Operations  TRB Truck Size and Weight  TRB Roundabout Committee  Subcommittee Chair Trucking and Roundabouts

W IS DOT F REIGHT O PERATIONS P ROGRAM M ANAGER  Permit Support  OSOW FN  Design Support  Operations Support  Incident  Work zones  Carrier Risk/Escort  Policy Support  Outreach  Operations focused  Truck Size and Weight Study  Est OSOW Freight Network  Industry Outreach  IOH Study

R OUNDABOUTS AND T RUCKING  OSOW Community  OSOW FN  RABs plotted and noted in routing system  FDM Design Guidance  Check Vehicles  Standard Trucking  CDL Manual  FDM Design Guidance  Individual project outreach if they attend  Trucking Summit

MN/WI T RUCKS AND R OUNDABOUTS S TUDY  Pooled Fund  Focus on how to design for standard semi trucks  Balance safety with freight mobility  Did not focus on OSOW (KDOT same time)  Ideal features that preserve safety goals while not creating an impediment for trucks  3 primary outcomes  Class I, II, & III

C LASS I E XAMPLE Off tracking upon entry, moving through circulating roadway and exit Typically single lane roundabout

C LASS II E XAMPLE Trucks stay in lane on entry and exit Trucks off track in circulating roadway Could be single or multilane

C LASS III E XAMPLE Truck designed to stay in lane on entry circulation and exit Almost always a multilane roundabout

T HINGS TO CONSIDER  Trucks and roundabouts can work  Trucking Industry cares about safety too  Education is key  Effective outreach takes time and the right message

T HINGS TO C ONSIDER ( CONT )  What do you want trucks to do when they approach the intersection?  Design based on Percent vs. actual count  Design or speed a factor when trucks crash in Roundabouts?

D ESIGN OR E DUCATION ?

G OVERNORS H IGHWAY S AFETY C ONFERENCE  Aug 8th, 2013  Holiday Inn Hotel and Convention Center Stevens Point, Wisconsin  ½ day enforcement and industry  In depth Presentation and roll up the sleeves and talk about Roundabouts and other design concepts (DDI, SPI, Turbine, etc)

Q UESTIONS Peter Lynch Freight Operation Program Manager (608)