McHenry Forum - Crash Reconstruction & Simulation

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Sept 2012: A question from the INCR forum asked about references on Pavement Shoulder dropoffs and the recommend state guidelines.
Here are a few references on the subject:

• 1980's: McHenry Consultants performed subcontract research and simulation study on pavement shoulder dropoffs in work zones for FHWA under contract DTFH-80-C-00146
  • Work Zone Design Consideration for truck Operations and Pavement/Shoulder Dropoffs.
    A part of our research include McHenry review of Pavement Shoulder dropoffs
    • Draft of sections by McHenry:"Work Zone Design Considerations for Truck Operations and Pavement/Shoulder Drop-Offs" 5 megs,
    • Full Final Report "Work Zone Design Considerations for Truck Operations and Pavement/Shoulder Drop-Offs",7 megs, Contract DTFH61-80-C00146
• 2006: FHWA report Safety Impacts of Pavement Shoulder Drop-offs which contains state by state review.
• 2012: Safety of Excessive Pavement Wedge Due to Overlays
  • Which includes reference to Field Application and Assessment of the Safety Edge
• 2017: FHWA article The Low-Cost Dropoff Solution Publication Number: FHWA-HRT-07-006, Issue No: Vol. 71 No. 2, Date: Sept/Oct 2007
• From National Workzone Safety Clearinghouse (workzonesafety.org) a page listing related references Pavement Dropoffs
• 2009: NYTimes article Efforts Lag at Making Highway Work Zones Safer

Some figures from the System Technology Report "The Influence of Roadway Disturbance on Vehicle Handling" by Klein, Johsnson, Stzozak, Contract DOT-HS-J-01223 which are included in the McHenry review of Pavement Shoulder dropoffs