James King - ipenz

ROAD SAFETY ISSUES IN CENTRAL REGION
Number of Crashes
A general analysis of crash related data
for the Central and Lower North island of New Zealand
James King – Senior Engineer Performance Monitoring Wellington
E-mail: james.king@nzta.govt.nz
ROAD SAFETY ISSUES IN CENTRAL REGION
Urban and Rural Crash Severity Trends
2000
1500
1000
500
0
1998
1999
2000
2001
Urban
2002
2003
2004
2005
2006
2007
Fatal crashes Serious crashes Minor crashes TOTAL
Number of Crashes
2000
1500
1000
ROAD SAFETY ISSUES IN CENTRAL REGION
Factors associated with crashes
500
0
1998
1999
2000
2001
Rural
2002
2003
2004
2005
2006
Fatal crashes Serious crashes Minor crashes TOTAL
Factor Group Rural Urban
01 - Alcohol 19% 14%
02 - Too fast 35% 15%
03 - Failed Giveway/Stop 11% 34%
04 - Failed Keep Left 12% 4%
05 - Overtaking 3% 3%
06 - Incorrect Lane/posn 7% 9%
07 - Poor handling 35% 14%
08 - Poor Observation 31% 55%
09 - Poor judgement 13% 10%
10 - Fatigue 7% 2%
11 - Disabled/old/ill 2% 4%
12 - Pedestrian factors 1% 18%
14 - Vehicle factors 7% 5%
15 - Road factors 20% 7%
16 - Weather 5% 3%
0% 25% 50% 75% 100% 0% 25% 50% 75% 100%
Fatal & Serious Injury Crashes Minor Crashes
2007
ROAD SAFETY ISSUES IN CENTRAL REGION
Crash Reporting
The New Zealand Transport Agency (and its pre-cursors) have
produced reports annually related to road safety in particular:
Road Safety Data Reports
Road Safety Issues
Based on the reports of crashes by the Police in individual local
body areas or administrative division.
ROAD SAFETY ISSUES IN CENTRAL REGION
Types of crash movements
Movement Category Rural Urban
Bend-Lost control/Head on 19% 14%
Crossing/Turning 10% 30%
Overtaking 5% 4%
Pedestrian vs Vehicle 1% 17%
Rear end/obstruction 8% 24%
Straight-Lost control/Head on 17% 8%
0% 25% 50% 75% 100% 0% 25% 50% 75% 100%
Fatal & Serious Injury Crashes Minor Crashes
ROAD SAFETY ISSUES IN CENTRAL REGION
Other data sources
We use data from a number of sources including but not
limited to:
Hospital Discharge Data
Population Statistics
RAMM Data
Police Enforcement Statistics
While we do not necessarily have direct access to the data we
can use it to give a fuller picture of the crash situation.

Number of Offences/10
Number of Crashes
ROAD SAFETY ISSUES IN CENTRAL REGION
Speed Offences by 1000 population
Hospital to Crash Casualty Comparisons
Number of Crash Casualties
2000
18 0 0
16 0 0
14 0 0
12 0 0
10 0 0
800
600
400
200
0
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Year of Event
Gisborne RC Hawkes Bay RC Manawatu-Wanganui RC
Taranaki RC Wellington RC Taranaki DHB
Gisborne DHB Hawkes Bay DHB Manawatu-Wanganui DHB
Wellington DHB
ROAD SAFETY ISSUES IN CENTRAL REGION
Alcohol Offences/Crashes
600
500
400
300
200
100
0
11%
Carterton DC
13%
Central Hawkes Bay DC
14%
Gisborne DC
11%
Hastings DC
10%
Horowhenua DC
10%
Hutt City
9%
10%
Kapiti DC
Alcohol Offences Alcohol Related Crashes
ROAD SAFETY ISSUES IN CENTRAL REGION
Speed and Population
900
800
700
600
500
400
300
200
100
0
Carterton DC
Central Hawkes Bay DC
Gisborne DC
Manawatu DC
8%
Masterton DC
12%
Napier CC
9%
New Plymouth CC
8%
Palmerston North CC
9%
Porirua CC
8%
Rangitikei DC
9%
Ruapehu DC
16%
South Taranaki DC
South Wairarapa DC
11%
Stratford DC
10%
Tararua DC
11%
Upper Hutt CC
7%
3000
2500
2000
150 0
1000
Note: label is percentage of reported crashes
2003 2004 2005 2006 2007
Hastings DC
Horowhenua DC
Hutt City
Kapiti DC
Manawatu DC
Masterton DC
Napier CC
New Plymouth CC
Palmerston North CC
Porirua CC
Rangitikei DC
Ruapehu DC
South Taranaki DC
South Wairarapa DC
Stratford DC
Tararua DC
500
0
Upper Hutt CC
Number of Hospital Casualties
12%
Wairoa DC
Wairoa DC
13%
Wanganui CC
Wanganui CC
6%
Wellington CC
Wellington CC
ROAD SAFETY ISSUES IN CENTRAL REGION
Alcohol and Speed
Using Police Statistics on offences detected we can compare
crash data for trends and indicators that suggest where
enforcement action might be targeted.
Number of Offences/100
Number of Crashes
Number of Offences
per 1000 population
ROAD SAFETY ISSUES IN CENTRAL REGION
Speed Offences/Crashes
1000
900
800
700
600
500
400
300
200
100
0
14%
Carterton DC
19%
Central Hawkes Bay DC
12%
Gisborne DC
16%
Hastings DC
17%
Horowhenua DC
Speed Offences Speed Related Crashes
15%
Hutt City
ROAD SAFETY ISSUES IN CENTRAL REGION
Speed Offence Detection
70
60
50
40
30
20
10
0
Gisborne
14%
Kapiti DC
18%
Manawatu DC
15%
Masterton DC
2003 2004 2005 2006 2007
Hawkes
Bay
Manawatu-
Wanganui
Taranaki
Wellington
12%
Napier CC
13%
New Plymouth CC
11%
Palmerston North CC
Number of Offences
per million vkt
16%
Porirua CC
15%
22%
Rangitikei DC
Ruapehu DC
22%
South Taranaki DC
23%
South Wairarapa DC
17%
20%
Note: label is percentage of reported crashes
19%
Stratford DC
4500
4000
3500
3000
2500
2000
1500
1000
500
0
2003 2004 2005 2006 2007
Gisborne
Hawkes Bay
Tararua DC
Manawatu-
Wanganui
Upper Hutt CC
20%
Wairoa DC
Taranaki
16%
Wanganui CC
11%
Wellington CC
Wellington

ROAD SAFETY ISSUES IN CENTRAL REGION
Seatbelt Usage
Percentage
100
80
60
40
20
0
1998
1999
Front Seatbelt Wearing
Gisborne Hawkes Bay
Taranaki Manawatu-Wanganui
Wellington
2000
2001
2002
Percentage
2003
100
80
60
40
20
0
2004
1999
2005
2000
2006
2001
2007
Percentage
100
80
60
40
20
0
Child Restraint Use
2002
2003
2004
1998
2005
1999
2000
Back Seatbelt Wearing
Gisborne Hawkes Bay
Taranaki Manawatu-Wanganui
Wellington
2006
2001
Gisborne Hawkes Bay
Taranaki Manawatu-Wanganui
Wellington
ROAD SAFETY ISSUES IN CENTRAL REGION
Driver Licences
Type of licence held by
“at fault” drivers in
crashes can be
examined to give an
indication for road
safety activities related
to licensing.
Wellington City
Wanganui District
Wairoa District
Upper Hutt City
Tararua District
Stratford District
South Wairarapa District
South Taranaki District
Ruapehu District
Rangitikei District
Porirua City
Palmerston North City
New Plymouth District
Napier City
Masterton District
Manawatu District
Kapiti Coast District
Hutt City
Horowhenua District
Hastings District
Gisborne District
Central Hawkes Bay District
Carterton District
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
2007
2002
2003
Driver Licence Type in %
Never Licensed Disqualified Expired Forbidden Wrong Class
Overseas Learner Restricted Full
ROAD SAFETY ISSUES IN CENTRAL REGION
Crash Data Conclusions
o Alcohol crashes percentages have reduced in the last 10
years although no change in the number of crashes have
been observed.
o Restraint use may have peaked and most probably can only
stay at the same level in future.
o Speed related crashes are increasing in Urban areas.
o Rural area crashes are a reducing percentage of crashes
but the numbers are not.
See http://www.ltsa.govt.nz/performance/index.html for individual authority data reports
2004
2005
2006
2007
Number of Offences in Hundreds
ROAD SAFETY ISSUES IN CENTRAL REGION
Restraint and Unlicensed Driver Enforcement
160
140
120
100
80
60
40
20
0
Unlicenced Driver Restraints
Carterton DC
Central Hawkes Bay DC
Gisborne DC
Hastings DC
Horowhenua DC
Hutt City
Kapiti DC
Manawatu DC
Masterton DC
Napier CC
New Plymouth CC
Palmerston North CC
Porirua CC
Rangitikei DC
Ruapehu DC
South Taranaki DC
South Wairarapa DC
Stratford DC
Tararua DC
Upper Hutt CC
Wairoa DC
Wanganui CC
Wellington CC
ROAD SAFETY ISSUES IN CENTRAL REGION
Crash Data Conclusions
o Crashes, and casualties, in Central Region, have increased
in the last 5 years principally in minor urban crashes.
o Lost of control is more prominent in rural crashes.
o Crossing/turning, Pedestrian vs. Vehicle and Rear
end/obstructions are predominant in urban areas.
o For vulnerable road users, cyclist and motorcyclist crashes
are increasing, pedestrian incidents are steady.
o Evidence suggests that Police enforcement may be uneven
across the Region.
ROAD SAFETY ISSUES IN CENTRAL REGION
SAFETY IMPROVEMENT ACTIVITIES
The NZTA will continue to support road safety activities
such as:
o Crash Reduction Studies
o Road Safety Action Plans
o LTCCP’s
o Road Safety Works
We would also encourage roading authorities to establish a
‘Deficiency Database and Prioritisation’ process as an
element of their road safety planning processes.