12th ATRANS ANNUAL CONFERENCE(2019.8.23)

Accidents Data Collection:
Case study in Japan
Satoru KOBAYAKAWA, Dr.
Professor
NIHON UNIVERSITY

Road traffic accident fatalities per 100,000 persons
16141210864
20

U.S.A
FranceGeramany
Japan
U.K.
2003

2005

2007

2009

2011

2013 Year

Source: IRTAD
2

Number of Fatalities(Person)

VehiclePedestrian

Motorcycle

Bicycle(Year)

Ratio of Motorcycle Fatalities< in Tokyo>< in Japan>

Others 21.1%

Others 0.3%
Motorcycle 17.4%

Motorcycle 30.8%

Pedestrian
35.6%

Pedestrian
42.0%
Vehicle7.7%

Bicycle17.5%
N=143Vehicle
33.9%

Bicycle12.8%
N=3532

Injury part of bodyTokyo (2018)

Tokyo (2014-2018)

Others
13.6%
Abdomen
4.5%
Chest
29.5%

Others
16.8%
Head
52.3%

Abdomen
8.2%

Head
48.1%

Chest
26.9%

We can say “Wearing a helmet is important”

Minimum set of Data
• Accident identification (a unique number-basedsystem)• Time (the date, hour, minute, day of week)• Location (general info, route, network, GPS)• Accident type (single veh., rear to head, veh andped, wrong way, etc)
• Vehicles involved (number, type)• Accident consequences (fatalities, injuries, materialdamage)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 ofLand Policy Research Committee, applied the system to twocities (Shiroi and Ichikawa) in Chiba Prefecture.
 From 2008, TSMSS has applied to Other countries

Overview of the scheme
The scheme assists• to promote consciousness of citizens about traffic safety• and to reach consensuses on implementing traffic safety measures.
Ｗｅｂ server
サーバー
ＤＢ・Input of accident data 【Traffic Accident Analysis Sub System 】
Synchronous
Traffic
Expert・The accident analysis or
同期サーバー
交通技術者
servermeasures planＬＡＮ

インターネットInternet【Hiyari Experience Input Sub System 】
Citizen
市 民

データベース
Database

・Report of Hiyari experience
・Inspection of accident andmeasures information

Traffic Safety Measure Support System1010

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

Map display of Hiyari
experience data

Map DB
Traffic accidentDB
Map display of traffic
accident dataGIS

The integrated
management ofboth data

High accident and Hiyari
experience frequency
location

Accident form of specific part11

No. of Hiyari experience reports
per location

An integrated analysis of accidents
and Hiyari experiences

181614121086420

Both of accidents and Hiyari experiences
frequently occurred

0No.20of accidents reports
40 per location
6080

Observation of road and traffic conditions on the site
Observing spot speeds

To Jalan Brown

To Penang Medical
CollegeThe taking
chargeengineer in theplace

Direction of Traffic survey

Study Team member

Position of Spot speed
investigation

Staff in the place

Investigation section of thevehicle conduct

13
To Hospital Pulau Pinang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