Methodological guide - Road safety stake analysis

Methodological guide - Road safety stake analysis

Interurban environment

Collection
Références

This guide proposes a methodology to carry out a road safety stakeanalysis  on  the  basis  of  the  accident  data  analysis.  It  essentiallycovers the interurban environment.

Description

This guide proposes a methodology to carry out a road safety stakeanalysis on the basis of the accident data analysis. It essentiallycovers the interurban environment.

Firstly, this guide defines the general approach via its differentstages:

* stake analysis;

* diagnosis and action guidelines;

* study and implementation of actions;

* monitoring and assessment.

The second part only covers the stake analysis methodology,referring, for the most technical items, to practical and morespecific quick references.

Finally, case studies illustrate different types of stake analysis.

Sommaire

Contents

Contents..................................................................................................................... 5

Who is this guide for?................................................................................................. 11

What is this guide for?................................................................................................ 11

How to use this guide? ............................................................................................... 11

1. General framework ............................................................................................ 13

2. The contract ........................................................................................................ 16

3. Stake analysis: determine .................................................................................. 17

When should an stake analysis be carried out? .................................................... 17

In sum, an stake analysis should be carried out: .................................................. 17

4. Diagnosis and actions guidelines: understand ................................................. 18

When should a diagnosis be carried out? ............................................................. 18

5. Study and implementation of actions: act........................................................ 19

6. Follow-up and assessment: assess ..................................................................... 20

Some specific scenarios........................................................................................ 20

1. Overview of the stake analysis .......................................................................... 22

Definitions ............................................................................................................ 22

The different stages of the stake analysis ............................................................. 22 Data....................................................................................................................... 24

Accident data.............................................................................................................. 24

Additional data with respect to accident data ............................................................ 24

Tools ..................................................................................................................... 25

2. Accident research evaluation of existing situation.................................... 26

Purpose: ................................................................................................................ 26

Content: ................................................................................................................ 26

Implementation (#3):......................................................................................... 26

Precautions: .......................................................................................................... 26

3. Analysis of evaluation and in-depth study of stakes ....................................... 28

Purpose: ................................................................................................................ 28

Content: ................................................................................................................ 28

Precautions: .......................................................................................................... 28 Implementation:.................................................................................................... 28

Thematic analysis ....................................................................................................... 30

Chronological analysis............................................................................................... 30

Spatial analysis .......................................................................................................... 30

Example of in-depth study of analysis of accidents against stationary obstacles in the open country........................................................................................................................31

4. Priorization of stakes ......................................................................................... 33

Purpose: ................................................................................................................ 33 Content: ................................................................................................................ 33 Implementation:.................................................................................................... 33

Precautions: .......................................................................................................... 33

Quick reference 1 How to handle the stake analysis contract?......................... 37

1. Preliminary principles for contract formulation ............................................... 37

2. Items for drafting specifications ....................................................................... 37

Context ....................................................................................................................... 37

Purpose of study ......................................................................................................... 38

Parties involved (or partners) .................................................................................... 38

Content of study.......................................................................................................... 38

Study overview............................................................................................................ 38

Meetings ..................................................................................................................... 39

Items to be provided by the sponsor of the study or to be prepared by the engineering firm.................................................................................................................................... 39

Deadlines.................................................................................................................... 39

Study total and payment terms ................................................................................... 39

Termination of contract.............................................................................................. 39

Intellectual property ................................................................................................... 39

Quick reference 2 Accident file for stake analysis .............................................. 40

1. Up to December 2003, two BAAC file formats ("BAAC 93") ........................... 40

2. Since January 2004, "BAAC 2002" ................................................................... 40

3. BAAC file description........................................................................................ 41

4. The accident file has limitations....................................................................... 43

5. Amending the accident file............................................................................... 43

6. Other accident data ........................................................................................... 43

ATB reports ................................................................................................................ 43

Police reports ............................................................................................................. 44

REAGIR investigations and "understand in order to act"............................................ 44

Link and consistency between data and tools............................................................. 44

Quick reference 3 Some tips for carrying out an evaluation.............................. 45

1. How to start?..................................................................................................... 45

2. Questions to ask to avoid pitfalls.................................................................... 45

3. Without Concerto?...................................................Erreur ! Signet non défini.

Quick reference 4 Road network sectioning ........................................................ 46

1. Why sectioning? ............................................................................................... 46

2. How to section? ................................................................................................ 46

3. Precautions ....................................................................................................... 46

4. With Concerto .................................................................................................. 46

Quick reference 5 References................................................................................ 48

1. Why compare?.................................................................................................. 48

2. Possible references ........................................................................................... 48

3. Choice of reference........................................................................................... 48

4. Sources of information ..................................................................................... 48

5. Specific case of junctions: predictive models .................................................. 49

6. Rate and density references (calculated on 1998-2000)................................... 49

Quick reference 6 Road safety indicators ............................................................ 51

1. Unprocessed indicators..................................................................................... 51

2. Local Accident Research Indicators (IAL)........................................................ 51

3. Severity indicators ............................................................................................ 52

Severity .......................................................................................................................52

4. Risk indicators (rate, density and ZAAC) .......................................................... 53

Accident density.......................................................................................................... 53

Accident rate .............................................................................................................. 53

Which risk indicator should be selected? ................................................................... 53

ZAACs (Accident Accumulation Areas) ....................................................................... 54

5. Typological indicators ...................................................................................... 55

Calculation method: ................................................................................................... 55

Examples of typologies:.............................................................................................. 55

6. Economic indicators ......................................................................................... 55

Overall cost of personal injury accidents calculated on the basis of victims............. 55

Cost of personal injury accidents weighted with severity – PRAS calculation ........... 56

Cost savings - method 1.............................................................................................. 56

Cost savings - method 2.............................................................................................. 56

Which cost should be used?........................................................................................ 57

Quick reference 7 Local statistical analyses ........................................................ 58

1. Thematic analysis ............................................................................................. 59

3. Chronological analysis ..................................................................................... 59

2. Risk level analysis ............................................................................................ 60

Combined rate and density analysis ..................................................................... 60

Quick reference 8 Multi-criteria analysis for priorization stakes ................ 62

Cost for each theme (fictitious example).............................................................. 62

Quick reference 9 Some tips for mapping............................................................ 64

1. Memo guide...................................................................................................... 65

Publishing format ....................................................................................................... 65

Theme ......................................................................................................................... 65

Map background ........................................................................................................ 65

The three representation modes ................................................................................. 65

Point thematic analysis .............................................................................................. 65

Linear thematic analysis ............................................................................................ 65

Zone thematic analysis ............................................................................................... 65

Category thematic analysis ........................................................................................ 65

Choice of colors ......................................................................................................... 66

Chronological maps ................................................................................................... 66

Map harmonization .................................................................................................... 66

2. Further mapping details .................................................................................... 66

"Size" visual variable ................................................................................................. 66

"Color" visual variable .............................................................................................. 67

Place name rules ........................................................................................................ 67

Formatting rules......................................................................................................... 67

3. Example of map (CETE Mediterranean) ........................................................... 68

Quick reference 10 Definitions.............................................................................. 69

Road traffic personal injury accident ................................................................... 69 Adhonis................................................................................................................. 69

Concerto ............................................................................................................... 69

Accident density (personal injury accidents or serious accidents or fatal accidents) 69 Implication............................................................................................................ 70

Severity of a set of accidents ................................................................................ 70

Metods .................................................................................................................. 70

Urban environment (or built-up area)................................................................... 70

Morbidity .............................................................................................................. 71

Journey ................................................................................................................. 71

Open country ........................................................................................................ 71

Primary safety....................................................................................................... 71

Secondary safety................................................................................................... 71

Tertiary safety....................................................................................................... 71

Accident rate (personal injury accidents or serious accidents or fatal accidents)

71 Visage ................................................................................................................... 71

Case study 1 Determination of locations liable to accidents............................... 73

1. Case application context................................................................................... 73

2. Case specificities .............................................................................................. 73

Which data are necessary?......................................................................................... 73

Are there any particularly suitable indicators? ......................................................... 73

How far should the in-depth study go?....................................................................... 73

Priorization ........................................................................Erreur ! Signet non défini.

3. Practical implementation .................................................................................. 73

Preliminary stage ....................................................................................................... 73

Evaluations................................................................................................................. 73

Evaluation analysis .................................................................................................... 74

Priorization of stakes.................................................................................................. 74

Case study 2 Study on a specific theme ................................................................ 76

1. Case application context................................................................................... 76

2. Case specificities .............................................................................................. 76

Which data are necessary?......................................................................................... 76

Are there any particularly suitable indicators? ......................................................... 76

How far should the in-depth study go?....................................................................... 76

Priorization ........................................................................Erreur ! Signet non défini.

3. Practical implementation .................................................................................. 76

Preliminary stage ....................................................................................................... 76

Evaluation .................................................................................................................. 76

Evaluation analysis .................................................................................................... 77

4. Example ............................................................................................................ 78

Study excerpt .............................................................................................................. 78

Excerpt of study .......................................................................................................... 79

Excerpt of study .......................................................................................................... 81

Excerpt of study .......................................................................................................... 82

Case study 3 Stake analysis prior to a route diagnosis.................................... 83

1. Case application context................................................................................... 83

2. Specificities of this case ................................................................................... 83

Which data are necessary?......................................................................................... 83

Are there any particularly suitable indicators? ......................................................... 83

How far should the in-depth study go?....................................................................... 83

Priorization ........................................................................Erreur ! Signet non défini.

3. Practical implementation .................................................................................. 83

Preliminary stage ....................................................................................................... 83

Evaluation .................................................................................................................. 84

Evaluation analysis .................................................................................................... 84

4. Example ............................................................................................................ 84

Excerpt of study .......................................................................................................... 86

Case study 4 Observatory type study ................................................................... 87

1. Case application context................................................................................... 87

2. Specificities of this case ................................................................................... 87

Which data are necessary?......................................................................................... 87

Are some indicators more suitable than others? ........................................................ 87

How far should the in-depth study go?....................................................................... 87

And priorization? ....................................................................................................... 87

3. Practical implementation .................................................................................. 88

4. Example ............................................................................................................ 88

Excerpt of stake analysis prior to Haute Savoie DGO................................................ 89

Excerpt on "night-time accidents" section. ................................................................ 90

Excerpt of summary.................................................................................................... 93

Case study 5 DGO stake analysis ........................................................................... 94

1. Case application context................................................................................... 94

2. Specificities of this case ................................................................................... 94

Which data are necessary?......................................................................................... 94

Are there any particularly suitable indicators? ......................................................... 94

How far should the in-depth study go?....................................................................... 94

Priorization ........................................................................Erreur ! Signet non défini.

3. Practical implementation (technical part only)................................................. 95

Preliminary stage ....................................................................................................... 95

Evaluation .................................................................................................................. 95

Analysis ...................................................................................................................... 95

4. Example ............................................................................................................ 97

Contents of DGO stake analysis final report for the Landes district .......................... 97

Excerpt of study .......................................................................................................... 98

Excerpt of study .......................................................................................................... 99

Excerpt of study ........................................................................................................ 100

Excerpt of study ........................................................................................................ 101

Excerpt of study ........................................................................................................ 102

Excerpt of study ........................................................................................................ 103

Excerpt of study ........................................................................................................ 105

Excerpt of study ........................................................................................................ 106

Case study 6 SURE stake analysis (priorization of routes) ....................... 107

1. Case application context................................................................................. 107

2. SURE process................................................................................................... 107

Study ......................................................................................................................... 107

Main bibliography................................................................................................ 110

For more information .......................................................................................... 111

Examples of studies .............................................................................................. 111

Internet / Intranet sites ........................................................................................ 112

Internet sites........................................................................................................ 112

Sites for i2 network ............................................................................................ 112

Détails
Catégorie de produit
Ouvrage
Numéro ISRN
SRN: EQ-SETRA—07-ED47—FR+ENG
Editeur
Cerema (ex-Setra)
Auteur collectif
Cerema
Date de parution
Nombre de pages
117 pages
Langue de la publication
Anglais
Type d'auteur
Oeuvre collective
Paiement 100% sécurisé
Livraison dans le monde entier