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April 2015
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Tuesday, April 28, 2015

April Technical Dinner - Preemption of Roundabouts Near At-Grade Crossings

05:30 PM - 07:30 PM Central Standard Time



Join us for a technical discussion regarding the complexities of railroad preemption in proximity to roundabouts. Jeromy Grenard, PE, PTOE and Hardik Shah, PE, PTOE of American Structurepoint will be presenting on the topic including an in depth discussion of how this issue was handled in two case studies.

Join us for a technical discussion regarding the complexities of railroad preemption in proximity to roundabouts. Jeromy Grenard, PE, PTOE and Hardik Shah, PE, PTOE of American Structurepoint will be presenting on the topic including an in depth discussion of how this issue was handled in two case studies.

Date                  
April 28, 2015
 
Time                
5:30 pm to 7:30 pm

   Networking: 5:30-6:00
   Dinner Served: 6:00
   Program Start: 6:15
   Adjourn: 7:30

Location               
George's Neighborhood Grill
(Avalon Crossing, 6935 Lake Plaza Dr, Indianapolis, IN 46220)

Reservations
Reservations are required. Please register no later than April 20. The price for members and government employees is $25 and non-members is $35.  Dinner includes an entree and one drink order. Choose between two entree options: pretzel prime rib sandwich or artichoke pasta.  A special thank you to our event sponsor American Structurepoint

As agencies around the US embrace the use of roundabouts as a viable (and even desirable) method of intersection control, there are increasing instances where they are being considered at or near at-grade railroad crossings.  Historically, these locations have been shied away from due to the inability to give priority to a certain movement at the roundabout and clear the tracks in advance of a railroad crossing event.  There are a handful of locations within the US that have used or proposed metering signals in order to address this situation.  

 This presentation will be focused on presenting two case studies of projects that are currently in design/construction in Indiana.  One evolved from a value engineering approach by the design team on the Ohio River Bridges project that simplified an already complex interchange geometry at SR 62/SR265/Port Road.  This resulted in substantial cost savings without compromising on the safety and operations of the roadway. Specifics will be presented regarding the unique railroad preemption concept and controller logic that was proposed. The second case study will cover a location where two at-grade intersections with two at-grade railroad crossings were combined into a single roundabout with the railroad crossing through the center of the roundabout.  The proposed signage, gate, and signal locations concept will be presented.

 
 

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