Establishing an Integrated Crash Database with Existing Data Systems for Traffic Safety Analysis Ms Ching-Huei Lai Chinese Taipei.

Establishing an Integrated Crash Database with Existing Data Systems for Traffic Safety Analysis

Ms Ching-Huei Lai Chinese Taipei

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Background

To study traffic crashes in more aspects & greater detail based on Haddon matrix structure.–e.g. violation crash

–e.g. medical care crash

To have comparable data, e.g.:–fatalities 24 hr 30 days≦ ≦–injury severity: AIS/ISS

EducationTraining

EMSInjury preventionSocial costs

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Haddon matrixVarious sources Merge Valuable data

hospital, violation

crash

hospital, vital, vehicle

insurance claims (Injury)

violation, inspection

crash crash

vehicle insurance

claims (damage)

Road (inspection, engineering

plans)

road (engineering plans)

Personal Vehicle Environment

Pre-event

Event

Post-event

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007Goal

Police-reported crash Other sources

Crash data

Vehicle insurance dataViolation data

Hospital data Vital data

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007Link

Driving: Violation

Crash

Vehicle insurance

claims

Vital

Hospital

ID

Pre-crash Post-crash

Crash

ID

Hospital

ID

Merge existing data systems

Use determinative linkage

Link at individual level

Use different identifiers

Negotiate across departments

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Integrated Database Overview

Data year: 1999-2004

Hospital

Vehicle insurance claimsDriving: violation

Vital

Crash

> 1 Million

> 25 Millions > 0.6 Millions

> 4 Millions> 15 Millions

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Reporting standard:–Chinese Taipei: 24 hr–Global: 30 days

Adjustment factor

Comparable

Results: Example 1 (1/2)

Crash records461,037

Vital records378,084

Linked Deaths: ≤ 30 days9,442

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Results: Example 1 (2/2)

Our factors are higher.Compare fatalities on the same base.

Japan Chinese Taipei

24 hr 1.20 1.35(C.I.=1.32~1.39)

days ECMT Chinese Taipei

scene/1 1.30 1.54(C.I.=1.49~1.59)

3 1.15 1.20(C.I.= 1.18~1.23)

7 1.08 1.09(C.I.= 1.07~1.10)

30 1.00 1.00

Data sources:1. Jacobs, G., Aeron-Thomas, A., Astrop, A., 2000. Estimating Global Road Fatalities. Transport Research Laboratory,

TRL Report 445.2. Japan National Police Agency, 2002. The Situation of Traffic Accidents Fatalities within 30 Days in Mid 2001. Japan.3. Lai, Ching-Huei, Huang, Wei-Shin, Chang, Kai-Kuo, Jeng, Ming-Chang, Doong, Ji-Liang, 2006. Using data linkage t

o generate 30-day crash-fatality adjustment factors for Chinese Taipei. Accident Analysis and Prevention 38, 696-702.

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007Results: Example 2 (1/2)

Deaths ≦ 30 daysIncluding:

–Pre-hospital–In hospital

•ED cases•hospitalized

Without post-crashhospital records:

26%

With post-crashhospital records:

74%

Admissions (ED):58%

Hospitalized42%

Linked Deaths: ≤ 30 days9,442

Hospital records

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007Results: Example 2 (2/2)

Fatality: a small piece of iceberg26% died pre-hospital42% died in ED32% died after hospitalizedImplication: EMS

pre-hospital, ED

pre-hospital 26%

hospitalized 32%

ED 42%

Uninjured

Slightly injured

Hospitalized

Transported but no hospitalized

Fatality

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

Conclusions

Integrated crash database offers the opportunity to

have cheap and effective data for research.

Future: extending to other data systems and research

aspects in the Haddon matrix.

TPT-WG29, Chinese Taipei

29th APEC Transportation Working Group Meeting, Chinese Taipei, 9-13 July 2007

The End