Road Safety Audits (2004) / Chapter Skim
Currently Skimming:
Pages 42-83
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 42... ...
41 APPENDIX C Sample Audit Reports The following four audit reports are included in this appendix: 1. Sample road safety audit report, National Highway Institute 2.
|
From page 43... ...
42 Sample RSA Report The following is a sample RSA report. This sample has been created using reports submitted by students of the RSA course.
|
From page 44... ...
43 Road Safety Audit Report on the Preliminary Design of the Proposed Widening of Route 60 between Milepost 8.7 and 10.4 PROJECT DESCRIPTION Route 60 is currently a two-lane rural/suburban highway that traverses a two-mile portion of Henderson. The existing speed limit on Route 60 is 45 miles per hour.
|
From page 45... ...
44 DATA AND DOCUMENTATION We have reviewed the following data and documentation during the conduct of this audit: • • • • • • • • • • • • • • • • • • • • • • • Transportation Cabinet Conceptual/Location Plan for the Corridor/Aerial Mosaic Typical Section Profiles Crash Data ASSUMPTIONS We have based our audit on the following assumptions: The existing highway is built to design standards current at the time. The plans for the proposed widening are according to current design standards.
|
From page 46... ...
45 • Due to the flat grade of profile, a curb and gutter drainage system might not be adequate and, consequently, water might spread into traffic lane. • • • • • • • • • • • • • • • • • • • • • • • • • Morning and evening sunlight glare interferes with traffic signals due to east-west alignment.
|
From page 47... ...
46 CONCLUSIONS In our judgment, consideration of the findings should improve the overall safety of the US 60 corridor in Henderson. We also suggest that a subsequent road safety audit take place after the preliminary plans have been completed.
|
From page 48... ...
47 Volume 5 Section 2 Annex E Part 2 HD 19/03 Illustrative Report -- A795 Ambridge Bypass -- Road Safety Audit Stage 2 ANNEX E: ILLUSTRATIVE REPORT A795 AMBRIDGE BYPASS ROAD SAFETY AUDIT STAGE 2 E WING AND BARNES PARTNERSHIP November 2004 November 2003 E/1
|
From page 49... ...
48 1 INTRODUCTION 1.1 This report results from a Stage 2 Road Safety Audit carried out on the A795 Ambridge Bypass at the request of the Design Organisation: Ambridge Bypass Design Team, DLS Partnership (Highways Division) , 12-14 Cathedral Close, Borchester.
|
From page 50... ...
49 pedestrians have been rerouted to cross the railway using the renovated station footbridge they may still be tempted to use the road bridge as this will provide a much shorter route to the adjacent bus stop (location N)
|
From page 51... ...
50 3.6 PROBLEM Location: G (drawing RSA/S2/001) -- On the bypass midway between Old Church Lane and Home Farm Road adjacent to the northbound lane.
|
From page 52... ...
51 the general public and there is no indication that the visibility reduces appreciably over the crest at chainage 1+250. This problem could increase the potential for accidents involving inappropriate overtaking.
|
From page 53... ...
52 3.14 NON-MOTORISED USERS 3.15 PROBLEM Locations: O and P (See drawing RSA/S2/001) -- Former line of the footpath at the crest to the north of Old Church Lane.
|
From page 54... ...
53 4 AUDIT TEAM STATEMENT I certify that this audit has been carried out in accordance with HD 19/03. AUDIT TEAM LEADER Ms I K Brunel BSc, MSc, CEng, MICE, MIHT Signed I K Brunel Principal Highway Engineer Traffic and Accident Investigation Division Date 22/11/04 Ewing and Barnes Partnership Albert Square Erinsborough Rutland AUDIT TEAM MEMBERS T MacAdam IEng, FIHIE Eur Ing.
|
From page 56... ...
55 Volume 5 Section 2 Annex F Part 2 HD 19/03 Illustrative Report -- A795 Ambridge Bypass -- Road Safety Audit Stage 4 ANNEX F: ILLUSTRATIVE REPORT A795 AMBRIDGE BYPASS ROAD SAFETY AUDIT STAGE 4 12 MONTH MONITORING REPORT D LS PARTNERSHIP May 2007 November 2003 F/1
|
From page 57... ...
56 1 INTRODUCTION 1.1 This report results from the Road Safety Audit Stage 4 - 12 month monitoring carried out on the A795 Ambridge Bypass Scheme as part of DLS Partnership (Maintenance Division) maintenance agreement with the Highway Agency.
|
From page 58... ...
57 5 CONCLUSIONS 5.1 A brief assessment of the 12-month accident history of the Ambridge Bypass has indicated that the accident frequency is lower than the predicted national average and no common factors or trends have been identified in the data. However, it has been noted that one of the three accidents that have occurred has resulted from a vehicle travelling northbound waiting to turn right into the southbound lay-by being struck from behind.
|
From page 59... ...
58 Volume 5 Section 2 Annex G Part 2 HD 19/03 Illustrative Report -- A795 Ambridge Bypass -- Road Safety Audit Stage 4 ANNEX G: ILLUSTRATIVE REPORT A795 AMBRIDGE BYPASS ROAD SAFETY AUDIT STAGE 4 36 MONTH MONITORING REPORT D LS PARTNERSHIP May 2009 November 2003 G/1
|
From page 60... ...
59 CONTENTS 1 INTRODUCTION 1.1 Background to the Study 1.2 Study Purpose 2 SCHEME DETAILS 2.1 Description of the Scheme 3 ANALYSIS OF ACCIDENTS 4 TRAFFIC CONDITIONS 4.1 Traffic Flows 4.2 Traffic Speeds 5 STATEMENT OF SAFETY PROBLEMS ON THE AMBRIDGE BYPASS 5.1 Problems Identified 5.2 Review of Previous Road Safety Audit Reports and Exception Reports 6 OPTIONS FOR TREATMENT 6.1 Accidents Occurring on the A827 dual carriageway approach to the A827/A795 roundabout 6.2 Accidents Involving Cyclists at the A827/A795 roundabout 6.3 Accidents Occurring at the Lay-by 7 CONCLUSIONS APPENDICES I Summary of Accident Record between 1st April 2006 to 31st March 2009 II Summary Accident Plot III Graphs showing Accident Frequency by Year, Month & Day of the Week IV Graphs showing Accident Frequency by Hour of the Day, Weather Conditions & Road Surface Conditions V Graph showing Accidents by Light Conditions
|
From page 61... ...
60 1 INTRODUCTION 1.1 Background to the study 1.1.1 This report results from the Road Safety Audit Stage 4 - 36 month monitoring carried out on the A795 Ambridge Bypass Scheme as part of DLS Partnership (Maintenance Division) maintenance agreement with the Highways Agency.
|
From page 62... ...
61 3.1.5 Accident Frequency (see Appendix III)
|
From page 63... ...
62 4 TRAFFIC CONDITIONS 4.1 Traffic Flows 4.1.1 Traffic count data has been obtained from an Automatic Traffic Counter (ATC) located on the A795 north of Home Farm Lane.
|
From page 64... ...
63 5.2.2 The following problem and recommendation was raised in the Stage 2 Road Safety Audit report: PROBLEM Locations: D and E (drawing RSA/S2/001) – Lay-bys north of Old Church Lane.
|
From page 65... ...
64 6.2.2 Economic Assessment The estimated cost of providing a segregated cycle track/footpath around the junction would be £60,000. Both the Department for Transport publication "A Road Safety Good Practice Guide"(2)
|
From page 66... ...
65 APPENDICES Appendix I -- Accident Record 1st April 2006 to 31st March 2009
|
From page 67... ...
66 Appendix II -- Accident Plot 1st April 2006 to 31st March 2009
|
From page 68... ...
67 Appendix III -- Accident Frequency by Year, Month & Day of Week
|
From page 69... ...
68 Appendix IV -- Accident Frequency by Hour of the Day, Weather Conditions & Road Surface Conditions Ambridge Bypass from 01/04/2006 to 31/03/2009
|
From page 70... ...
69 Appendix V -- Accident by Light Conditions Ambridge Bypass from 01/04/2006 to 31/03/20009
|
From page 71... ...
70 RSA TOOL KIT Developed by Eugene M Wilson, Ph.D., PE, PTOE LOCAL RURAL GOVERNMENT RSAR PROCESS Functional Local Rural Road Classifications RSAR Form Instructions for Local Rural Road Safety Audit Review Program Safety Issues to LOOK FOR Sample Report of RSAR Findings "The key to safety is implementing improvements for safety issues identified as urgent."
|
From page 72... ...
71 SAMPLE REPORT County Road Safety Audit Reviews Roadways reviewed and the recommendations resulting from the reviews are as follows (specifics on exact locations and more details are provided in the review notes) : Local/Rural Major High Speed Road Several items were noted that could be improved if the road was ever reconstructed.
|
From page 73... ...
72 The following item was thought to be a relatively low cost improvement that could have positive safety benefits and should be considered for improvement within a reasonably short time frame: • Pull ditches and remove large rocks
|
From page 74... ...
73 The following four audit reports are examples of how audits will vary with different audit teams. The first two audit reports are for the same facility, but performed by two different audit teams; the last two are for another facility, again performed by two different audit teams.
|
From page 75... ...
74 General Findings • • • • • • • • • The existing intersections operate at low levels of service with turning movements into/out of the driveways/entrances/streets in the immediate vicinity. Vehicles use shoulders inappropriately.
|
From page 76... ...
75 Road Safety Audit Report on the Preliminary Design of the Intersection Improvement at Route 51 and Slade Street in the Town of Layton Project Description The Route 51 and Slade Street intersection is a suburban intersection surrounded by commercial and residential land use. The intersection is in a major commuter route from the surrounding communities to the Turnpike/Interstate as well as the mall area.
|
From page 77... ...
76 Findings The group identified the following issues as potential safety problems: • • • • • • • • • • • The left turns on both legs of Slade Street are allowed to run at the same time, under the proposed signal phasing. There does not appear to be enough room in the intersection for these movements to be made at the same time without conflict.
|
From page 78... ...
77 ROAD SAFETY AUDIT REPORT for the design of the Route 197 Project in Stanford August 29, 2002 Project Description The proposed project is on State Route 197 from the intersection of Castle Road to the state DOT compact urban line, approximately 1.2 miles from the intersection heading toward Douglas. The project also involves several intersections beyond Castle Road.
|
From page 79... ...
78 commercial purposes. This intersection also has a fairly high accident cluster over the past 3 years.
|
From page 80... ...
79 State Department of Transportation Road Safety Audit Route 197 Stanford Preliminary Plan Review Tuesday, August 27, 2002 Project Description Route 197 is currently a two-lane rural/suburban minor arterial highway extending one mile north of the intersection with the Castle Road. The existing speed limit on Route 197 is 35 miles per hour.
|
From page 81... ...
80 • Law enforcement input should be encouraged. Assumptions We have based our audit on the following assumptions: • • • • • • • • • • • • • • • • • • • The plans for the proposed section are according to current design standards.
|
From page 82... ...
81 • Numerous drainage deficiencies were observed and need to be addressed. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Excessive rutting was observed at numerous locations including: 0+700 southbound lane 0+890 southbound lane.
|
From page 83... ...
82 • • • Sight distance at 1+360, left, access may not meet design speed criteria. Excavation of the bank to the north and/or movement of the entrance needs to be evaluated in relation to sight distance needs here.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.