Accidents Data Collection: Case study in Japan

Satoru KOBAYAKAWA, Dr.Professor

NIHON UNIVERSITY

12th ATRANS ANNUAL CONFERENCE (2019.8.23)

2

02468

10121416

2003 2005 2007 2009 2011 2013 Year

U.S.AFranceGeramanyJapanU.K.

Road traffic accident fatalities per 100,000 persons

Source: IRTAD

Number of Fatalities(Person)

(Year)

Vehicle

Pedestrian

Motorcycle

Bicycle

Ratio of Motorcycle Fatalities

Others 21.1% Others 0.3%

Pedestrian42.0%

Pedestrian35.6%

Bicycle17.5%

Bicycle12.8%

Vehicle7.7%

Vehicle33.9%

Motorcycle 30.8% Motorcycle 17.4%

< in Tokyo> < in Japan>

N=143 N=3532

Injury part of body

We can say “Wearing a helmet is important”

Tokyo (2018) Tokyo (2014-2018)

Head52.3%

Head48.1%

Abdomen 4.5%

Chest29.5% Chest

26.9%

Abdomen8.2%

Others13.6%

Others16.8%

Minimum set of Data• Accident identification (a unique number-based

system) • Time (the date, hour, minute, day of week) • Location (general info, route, network, GPS)• Accident type (single veh., rear to head, veh and

ped, wrong way, etc)• Vehicles involved (number, type) • Accident consequences (fatalities, injuries, material

damage)

Features of Data set

• road description • specific places/objects • road alignment • road surface • road signing and marking • roadside obstacles • visibility conditions

• weather conditions• traffic control• position of accident • main causes of accident

What are Hiyari experience reports?

• Given by drivers, riders, and pedestrians.• Subjective reports of their experiences where

– A car nearly hit another car.– A pedestrian was nearly hit by a car.– A bicycle rider is sometimes scared by heavy trucks.– A pedestrian is sometimes chased by bicycles.– Etc.

8

Implementation of TSMSS The study of Traffic Safety Measure Support System

(TSMSS) has begun in 1997 supported by ITASS

Between 2001 and 2004, social experiments were conducted

in Chiba Prefecture Kamagaya city, Japan

From 2005 till 2006, the system, with the financial aid of

Land Policy Research Committee, applied the system to two

cities (Shiroi and Ichikawa) in Chiba Prefecture.

From 2008, TSMSS has applied to Other countries

10

交通技術者

ＬＡＮ

データベース市　民

インターネット

同期サーバー　　　　サーバーＷｅｂＤＢ

【Traffic Accident Analysis Sub System 】

【Hiyari Experience Input Sub System 】

・Input of accident data

・The accident analysis or measures plan

・Report of Hiyari experience

・Inspection of accident and measures information

server

Data base

Internet

Synchronous server

Traffic Expert

Citizen

Traffic Safety Measure Support System

The scheme assists • to promote consciousness of citizens about traffic safety • and to reach consensuses on implementing traffic safety measures.

10

Overview of the scheme

11

Overview of the schemeThe scheme uses an ICT system with Web GIS and the Internet that integrately manage• traffic accident data• and Hiyari experience reports from citizens.

GISMap display of Hiyariexperience data

Map display of traffic accident data

The integrated management of both data

High accident and Hiyari experience frequency location

Accident form of specific part

Hiyari experience DB

Map DB

Traffic accident DB

An integrated analysis of accidents and Hiyari experiences

02468

1012141618

0 20 40 60 80

No.

of H

iyar

iexp

erie

nce

repo

rts

per l

ocat

ion

No. of accidents reports per location

Both of accidents and Hiyari experiences frequently occurred

ヒヤリ件数-事故件数

59

46

31

10

9

32

28

12

76

35

27

13

13

10

10

31

24

14

2

39

3

27

14

8

36

16

14

11

11

9

8

6

4

52

40

34

20

20

17

16

16

15

14

12

11

10

9

8

8

8

7

7

7

5

4

4

4

1

1

54

50

47

34

30

28

27

22

21

19

18

17

16

15

13

11

10

10

8

7

7

6

6

5

4

3

3

3

3

3

3

2

2

2

2

1

1

1

1

1

1

28

28

23

22

18

18

16

14

14

13

13

12

12

12

12

11

10

10

9

9

9

8

8

7

7

6

6

6

6

6

6

6

5

5

5

5

5

5

4

4

4

4

4

4

4

4

4

4

4

4

3

3

3

3

3

3

3

3

3

3

3

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

16

11

10

10

10

9

9

9

8

8

8

8

8

8

8

7

7

7

7

6

6

5

5

5

4

4

4

4

4

4

4

4

4

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

鈴木さん

1659稲荷西10050

1146丸山第五公園西1018580

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110ｸﾞﾘｰﾝﾊｲﾂ南105

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12市民の森入口105

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12東初富4丁目35番1地マルエツ鎌ヶ谷大仏店前105

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12ｲｹﾀﾞｵｰﾄ前105

12鎌ヶ谷電化ｾﾝﾀｰ前105

11日本ﾋﾟｸﾞﾒﾝﾄ前105

11初富137高橋馨宅前105

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11東初富5丁目21番29号地砂塚英夫宅前105

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11山中不動産前105

11五月荘前105

13

Observation of road and traffic conditions on the site

Direction of Traffic surveyPosition of Spot speed investigationInvestigation section of the vehicle conduct

To Penang Medical College

To Hospital Pulau Pinang

To Jalan Brown

Observing spot speeds

The taking charge engineer in the place

Study Team member

Staff in the place

Traffic Accidents in Kamagaya city

Traffic Accidents in Kamagaya city

Traffic Accidents in Kamagaya city

All Accidents (2008-2018) Motorcycle Accidents (2008-2018)

Traffic Accidents in Kamagaya city

All Accidents (2008-2018) Motorcycle Accidents (2008-2018)

Traffic Accidents Analysis

• Traffic accidents were occurred by coincident• It is important to collect the traffic accident data• It also need to store the data• The hot spots were chosen• Analyze the reason that cause the accident• Consider the countermeasure of traffic accidents

Data & InformationAccident picture frameAccident picture frame and DATAAccident DATA – Collectors-ManagerAccident Related DatabasesRoad Accident Casualties – the Data�スライド番号 7Problem issue�road traffic accident cause of death Super simple concept�data integrationスライド番号 10スライド番号 11スライド番号 12スライド番号 13How to work in the next step?Final Remarks