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M4 Junction 13 Improvement

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1 Post Opening Project Evaluation A34 / M4 Junction 13 Improvement Five Years After Study April 2010 Notice This report was produced by Atkins Transport Planning and Management for the Highways Agency for the specific purpose of Post Opening Project Evaluation. This report may not be used by any person other than the Highways Agency without Highways Agency’s express permission. In any event, Atkins accepts no liability for any costs, lia
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    1   Post Opening Project Evaluation  A34 / M4 Junction 13 Improvement Five Years After Study  April 2010 Notice This report was produced by Atkins Transport Planning and Management for the Highways Agency for the specific purpose of Post Opening Project Evaluation. This report may not be used by any person other than the Highways Agency without Highways Agency’s  express permission. In any event, Atkins accepts no liability for any costs, liabilities or losses arising as a result of the use of or reliance upon the contents of this report by any person other than the Highways Agency. Document History JOB NUMBER: 5084038.720 DOCUMENT REF: POPE _ A34 Chieveley FYA 5 Final PW Jan 20114 Revisions from 2 nd  draft PW Oct 20103 Environment comments NW Sep 20102 Followin external reviews NB Au 20101 Draft NBGONMNM Aril 2010Revision Purpose Description OriginatedCheckedReviewedAuthorised Date  Post Opening Project Evaluation  A34/M4 J13 improvements – Five Years After Study 2 Contents Section Page Glossary 4   Executive Summary 6   Scheme Description 6   Objectives 6   Main Findings 6   Summary of Scheme Impacts 7   Summary of Scheme Economic Performance 8   1.   Introduction 9   The POPE Report 10   Scheme History 12   Scheme Objectives 12   Information Sources 13   Structure of the Report 13   2.   Traffic Impact 14   Introduction 14    Analysis of Traffic Volumes 14    Analysis of Journey Time Changes 23   3.   Safety 29   Introduction 29   Data Sources 29    Accident Locations Before and After Opening 29   Security 36   4.   Economy 37   Introduction 37   Monetary Benefit 37   Scheme Costs 39   Journey Time Reliability 40   5.   Environmental Impacts 42   Introduction 42   Environmental Effects 42   Noise 43   Local Air Quality 44   Greenhouse Gases 45   Landscape 46   Biodiversity 48   Heritage of Historic Resources 50   Water 51   Physical Fitness 52   6.    Accessibility and Integration 54   Introduction 54    Accessibility 54   Non-Motorised User Surveys 55   Integration 59   7.    Appraisal and Evaluation Summary Tables 62   8.   Conclusions 65   Evaluation 74   Noise 75   Local Air Quality 78   Greenhouse Gases 79   Landscape 80   Biodiversity 86   Heritage of Historic Resources 91   Water 93   Physical Fitness 97    Post Opening Project Evaluation  A34/M4 J13 improvements – Five Years After Study 3 The maps in this document are reproduced from Ordnance Survey material with the permission of Ordnance Survey on behalf of the Controller of Her Majesty's Stationery Office © Crown copyright. Unauthorised reproduction infringes Crown copyright and may lead to prosecution or civil proceedings. Highways Agency Licence No. 100018928. Published 2010.  Post Opening Project Evaluation  A34/M4 J13 improvements – Five Years After Study 4 Glossary The following table details the acronyms and specialist terms used within the context of this report Term Definition  AADT  A nnual  A verage D aily T raffic. Average of 24 hour flows, seven days a week, for all days within the year.  Accessibility  Accessibility can be defined as ‘ease of reaching’. The accessibility objective is concerned with increasing the ability with which people in different locations, and with differing availability of transport, can reach different types of facility.  AM denoting the morning peak period  AONB  A rea of O utstanding N atural B eauty  AST  A ppraisal S ummary T able. This records the impacts of the scheme according to the Government’s five key objects for transport, as defined in DfT guidance contained on its Transport Analysis Guidance web pages, WebTAG  AWT  A verage W eekday T raffic. Average of Monday to Friday 24 hour flows. browsing (of an animal) moving around eating parts of plants, especially plants other than pasture  BCR B enefit C ost R atio. The ratio between the monetised benefits and costs of a scheme, used as a measure of value for money in economic terms COBA CO st B enefit  A nalysis – a computer program which compares the costs of providing road schemes with the benefits derived by road users (in terms of time, vehicle operating costs and accidents), and expresses the results in terms of a monetary valuation. The COBA model uses the fixed trip matrix. DfT D epartment f  or T ransport Discounting Discounting is a technique used to compare costs and benefits that occur in different time periods and is the process of adjusting future cash flows to their present values to reflect the time value of money. A standard base year needs to be used which is 2002 for POPE. ES Environmental Statement, the document prepared to report the assessment of the environmental effects of the scheme. EST E valuation S ummary T able. In POPE studies, this is a summary of the evaluations of the TAG objectives using a similar format to the forecasts in the  AST. HATRIS H ighways  A gency T raffic I nformation S ystem HEMP H andover E nvironmental M anagement P lan Highways  Agency  An Executive Agency of the Department for Transport, responsible for operating, maintaining and improving the strategic road network in England. IP I nter P eak, the time between the AM and PM peaks MAC M anaging  A gent C ontractor. A company appointed by the Highways Agency to
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