Autotechnical Expertise

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GUIDELINES FOR THE PRODUCTION OF EXPERTISE autotechnical

CENTRAL RESEARCH Forensic Institute


Foreword 3

CHAPTER I 4

Some basic concepts in autotechnical EXAMINATION 4

1. road conditions 4

2. The traffic situation 4

3. THE MECHANISM OF EVENTS 5

4. The technical possibilities of accident prevention 5

5. DANGEROUS SITUATION FOR DRIVER 6

6. emergency 8

7. RISK FOR MOVEMENT 8

8. FAULT MOVEMENT 9

9. The safety distance of 10

10. Danger Zone 11

11. vehicle lane 11

12. Particular care 12

13. RANGE 12

14. VISIBILITY 13

CHAPTER II 14

EXPERTS OF COMPETENCE-14 motor-vehicle

1. ISSUES authorizes autotechnical Examination 14

2. questions that go beyond the competence of experts motor-vehicles 15

CHAPTER III 16

BACKGROUND PRODUCTION EXAMINATION 16

SECTION 1. "BACKGROUND" The expert-16 motor-vehicle

2. SOURCES OF BASIC DATA 17

CHAPTER IV 19

TECHNICAL quantities determined EXPERT 19

1. Deceleration at emergency braking VEHICLES 19

2. The coefficient of adhesion between tire and road 20

3. RATIO braking performance 22

4. RESISTANCE FACTOR 23

5. The driver's reaction time 25

6.VREMYA LAG RESPONSE brake actuator 27

CHAPTER V 28

Experimental determination of the quantities necessary to conduct expert studies 28

1. Fixed speed of the vehicle to the witnesses 29

2. DETERMINATION OF TIME pedestrian traffic (TA) 30

3. DETERMINATION deceleration in emergency braking 32

4. DETERMINATION OF RESISTANCE FACTOR 33

5. Determination of the angle slant roadway 33

6. determining the radius of curvature of the road on a plot of 34 EVENTS

7. visual range OBSTACLES 36

8. Determination of the Review 37

CHAPTER VI 39

Address the issue of causal connections in autotechnical EXAMINATION 39

1. competence of experts when deciding on the causal connection 39

2. ESTABLISHMENT OF EXPERT Avtotexnik CAUSES AND NECESSARY CONDITIONS OF EVENTS 40

3. The causal connection between the actions of the driver and incident 42

Exceeding the speed of the driver 42

Delays in the adoption of measures to prevent accidents 44

Application braking maneuver instead of 45

The use of emergency (sudden) deceleration 46

Wrong choice of distance 47

Wrong choice of the interval 48

Hampering the movement 48

Operating faulty vehicle 49

4. The causal connection between the actions of pedestrians and accidents 50

CHAPTER VII 51

DETERMINATION OF THE MOMENT OF DANGEROUS SITUATION 51

1. GENERAL APPROACH TO DETERMINING THE MOMENT OF DANGEROUS SITUATION 51

2. POINT OF DANGEROUS SITUATION CREATED actions of the driver 55

3. TIME OF DANGEROUS SITUATION CREATED pedestrian activity