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Complete Regional Transportation Plan 2012 - Cape Cod ...

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3.4.3.2 Great Neck Road North/Old Barnstable RoadSix safety issues and associated enhancements were identified in this 2009 study:Safety Issue #1. Intersection GeometryEnhancements:1. Increase corner radii to accommodate larger vehicles.2. Narrow the Old Barnstable Road westbound approach and align it with the departurelane on the other side of the intersection to the extent possible within the right-of-way.Safety Issue #2. Grading IssuesEnhancements:1. Change the crown line on Great Neck Road North to facilitate crossing and turningmovements from Old Barnstable Road.2. Re-grade the Old Barnstable Road westbound approach to eliminate the low spot.Safety Issue #3. Limited Sight DistanceEnhancements:1. Measure the sight distances from the Old Barnstable Road westbound approach andcompare them to the required sight distances for the existing conditions. Based on theseresults, the following additional enhancements may be appropriate:2. Relocate signs and fence on the southeast corner to increase visibility for vehiclesexiting Old Barnstable Road westbound.3. Re-align both the horizontal and vertical geometry of Great Neck Road North toprovide adequate sight distance for all approaches.4. Re-grade the slope on the eastern side of the Great Neck Road North northboundapproach to provide adequate sight distance for the Old Barnstable Road westboundapproach.5. Study closing the Old Barnstable Road westbound approach to vehicle traffic. Thiswould include traffic analysis of the Route 28/Great Neck Road/Route 151 rotary toensure that the closure would not create undue traffic delay there.Safety Issue #4. Pavement MarkingsEnhancements:1. Re-stripe and maintain durable pavement markings at the intersection of Great NeckRoad North/Old Barnstable Road.Chapter 3: Safety <strong>Cape</strong> <strong>Cod</strong> <strong>Regional</strong> <strong>Transportation</strong> <strong>Plan</strong> | August 2011Page 306

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