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NH Route 28 Corridor Safety Audit

NH Route 28 Corridor Safety Audit. Preliminary Analysis of Historic and Existing Conditions. Road Safety Audits ( 23 CFR Part 924). Road Safety Audits means a formal safety performance examination of an existing or future road or intersection by an independent multidisciplinary audit team.

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NH Route 28 Corridor Safety Audit

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  1. NH Route 28Corridor Safety Audit Preliminary Analysis of Historic and Existing Conditions

  2. Road Safety Audits(23 CFR Part 924) • Road Safety Audits means a formal safety performance examination of an existing or future road or intersection by an independent multidisciplinary audit team. • Road Safety Audits are identified as a process for conducting engineering studies of hazardous locations, sections, and elements to develop highway safety improvement projects.

  3. Background Information • Crash Analysis • Vehicle Counts: Volume, Speed, Classification • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  4. SR28 – Preliminary Crash Analysis • Segments • Rate Quality Control • Segments with higher than “average” crash rates • Intersections • Equivalent Property Damage Only • EPDO Greater than 25 • Behavioral • Aggregate summary of crash records

  5. Segments

  6. Intersections

  7. Background Information • Crash Analysis • Vehicle Counts: Volume, Speed, Classification • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  8. Location Order • 1 ALTON (South of Prospect Mountain High School) • 2 ALTON (South of Stockbridge Road) • 3 ALTON/BARNSTEAD town line • 4 BARNSTEAD (South of Peacham Road) • 5 BARNSTEAD (North of NH Route 126) • 6 BARNSTEAD (South of NH Route 126) • 7 PITTSFIELD (North of Leavitt Road) • 8 CHICHESTER (South of Webster Mills Road) • 9 CHICHESTER (South of Bear Hill Road) • 10 CHICHESTER (Main Street West of NH Route 28) • 11 EPSOM (North of Epsom Traffic Circle) • 12 EPSOM (South of Short Falls Road)

  9. Sample of data collected for each location.

  10. Sample of data collected for each location.

  11. Corridor 85th Percentile Speed vs. Posted Speed Limits

  12. Corridor 85th Percentile Speed vs. Posted Speed Limits

  13. Background Information • Crash Analysis • Vehicle Counts: Volume, Speed, Classification • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  14. Background Information • Crash Analysis • Vehicle Counts: Volume, Speed, Classification • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  15. Background Information • Crash Analysis • Vehicle Counts: Volume, Speed, Classification • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  16. Background Information • Crash Analysis • Traffic Volume • Speed Study • Vehicle Classification Counts • Zoning and Land Use • Sign Inventory • Pavement Evaluation • LOS • Vehicles, Bicycles, and Pedestrians

  17. Next Steps • Obtain Crash Records for Identified Intersections • Behavioral Analysis • Crash Summary • Additional data collection may be required • Sign Retro-reflectivity • Turning Movement Counts at specific locations • Additional Speed Counts to fill in data gaps

  18. Next Steps - continued Road Safety Audit & Crash Reduction Factor Training Manchester Community College March 3rd and 4th 2009 Conduct Road Safety Audit Recommend “Cost Effective” Improvements

  19. Project Timeline

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