on-going research

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On-Going Research2008 Golden, CO - HAWK

1

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On-Going Research

North

2009 Oakland Co, Michigan – Maple & Drake

2

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Oakland County, MI Study• ADA Study phases

– Ph I – pre-installation of the HAWK or RRFB– Ph II – shortly after HAWK or RRFB installation

(Maple/Drake August 2009, Maple/Farmington, Feb 2010)

– Ph III – 3-6 months after installation.

3

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HAWK Conceptual View

4

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2010 – Maple & Farmington

5

Rectangular Rapid Flash Beacon (RRFB)

Oakland County, MI Study

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Design Approach for Pedestrian Safety & Accessibility

• Eliminate/ Reduce Conflict Points– Grade Separation– Simplify Geometry

• Eliminate or reduce entry/exit lanes• Reorient pedestrian networks away from Roundabout

6

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Design Approach for Pedestrian Safety & Accessibility

• Reducing/Minimizing Pedestrian Exposure– Simplify Roundabout Geometry– Geometric Improvements

• Bulb outs• Raised cross walks

– Ped Signalization– ITS Solutions– Police Enforcement

7

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Design Approach for Pedestrian Safety & Accessibility

• Improve Gap Detection for Visually Impaired Pedestrians

– ITS Solutions– Noise Producing Solutions to Provide Audible Cues– Minimize Crossing Distances– Shift Crossings away from Roundabout

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9

Fewer Conflict Points

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Practical Applications• Separate Motorized & Non Motorized

MovementsPedestrian Tunnel (Bad Aibling, Germany)

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Practical Applications

11

Simplify Geometry at Towson Roundabout

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Practical Applications

12

Geometry at Maple & Drake Roundabout

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On-Going Research2008 Swaunee, GA -

HAWK

13

14

ITE Roundabout Taskforce• Major updates to FHWA Guide, MUTCD,

AASHTO Greenbook, and HCM all due within next year.

• Goal - “One-Stop Shop” for Roundabout Info

• Wiki site, similar to Ped/Bike site, to be operational by early 2010.

• Toolbox

15

ITE Roundabout Taskforce• ITE Roundabout Task Force:

http://www.ite.org/councils/Safety/roundabout.asp

• Secretary & Local Task Force Coordinator: – Michael P. Mastaglio, PE

mmastaglio@rkk.com

• Task Force Technical Advisor: – Andrew T. Duerr, PE

aduerr@rkk.com