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12010-03-26Swedish Road Administration
Vision Zero Safety philosophy
• Inspiration from other areas ( i.e. occupational health and safety)
• People make errors, mistakes and misjudgements• There are biomechanical tolerance limits• The chain of events can be cut at many places• Focus on injuries not crashes
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22010-03-26Swedish Road Administration
Shared responsibilitySystem designers are responsible for the design, operation
and the use of the road transport system and are thereby responsible for the level of safety within the entire system.
Road users are responsible for following the rules for using the road transport system set by the system designers.
If the users fail to comply with these rules due to a lack of knowledge, acceptance or ability, the system designers are required to take the necessary further steps to counteract people being killed or injured.
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3Swedish Road Administration
Road users have the right to know about the safety of cars and roads
NCAP for vehicles NCAP for vehicles ((www.euroncap.comwww.euroncap.com))
EuroRAP for infrastructure/EuroRAP for infrastructure/speed limit speed limit www.eurorap.orgwww.eurorap.org
Examples:
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4Swedish Road Administration
Vision Zero safety results and future targets
• 15 years ago 6 killed/100.000 inhabitants/year• 2008: 4.4 killed/100.000 inhabitants/year• Future plans and strategies leading to less than
1 killed/100.000 inhabitants/year
• Is this possible??!!
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5Swedish Road Administration
0
20
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num
ber o
f chi
ldre
n ki
lled
annu
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year
Children killed in traffic in Sweden 1956-2005
7-14 år0-6 år
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6Swedish Road Administration
Swedish Policy for Traffic Safety for Children
• The safety of children is not a question for the child – it is a question for parents and society– Education for parents, school staff, traffic engineers etc– Measures focussed on safe environment (bicycle lanes etc),
bicycle helmets, child seats in cars, safe school busses (belts,alcohol interlock)
• Result of this strategy is a fatality rate of – Less than 1 killed/100.000 children/year (0-14)
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7Swedish Road Administration
Kinetic energy
• People are blind to kinetic energy!
That’s why you can’t put all responsibility on the road user…
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8Swedish Road Administration
Probab. of pedestrian fatality as a function of impact speed
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9Swedish Road Administration
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10Swedish Road Administration
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11Swedish Road Administration
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12Swedish Road Administration
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13Swedish Road Administration
The safety properties of cars and roads are key factors for dealing with the problem
• Alternative design can reduce fatality risk with up to 2 or 3 factors of ten.
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14Swedish Road Administration
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15Swedish Road Administration
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16Swedish Road Administration
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17Swedish Road Administration
Relative fatality risk/km/year1 10 200
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18Swedish Road Administration
Traditional safety philosophy
• A safe road is said to be wide and straight• These design characteristics is said to give drivers room
for evasive manoeuvres and thereby avoiding accidents• But - the traditional road design philosophy do not lead
to less fatalities/km/year!
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19Swedish Road Administration
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20Swedish Road Administration
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21Swedish Road Administration
Traditional safety philosophy (cont.)
When crashes occur in these environments the level of violence exceeds human tolerance- thus – resulting in fatalities.
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22Swedish Road Administration
Vision Zero philosophy
• People make errors, mistakes and misjudgements• Personal injuries is the problem - not accidents• Human tolerance for biomechanical forces is the
starting-point for design
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23Swedish Road Administration
Vision Zero philosophyIntegration and Separation.
1. Vulnerable road users should not be exposed to motorised vehicles at speeds exceeding 30 km/h
2. If 1. cannot be satisfied then separate or reduce vehicle speed to 30 km/h
3. Car occupants should not be exposed to other motorised vehicles at speeds exceeding 50 km/h in 90 degree crossings
4. If 3. cannot be satisfied then separate or reduce angle or reduce speed to 50 km/h
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24Swedish Road Administration
Vision Zero philosophyIntegration and Separation (cont).
5. Car occupants should not be exposed to oncoming traffic (other vehicles of approximately same weight) at speeds exceeding 70 km/h or 50 km/h (if oncoming vehicles are of considerably different weight)
6. If 5. cannot be satisfied then separate, homogenise weights or reduce speeds to 70(50) km/h
7. Car occupants should not be exposed to the road side in speeds exceeding 70 km/h or 50 km/h (if road side contains trees or other narrow objects)
8. If 7. cannot be satisfied separate, remove objects or reduce speed to 70(50) km/h
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2010-03-
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26Swedish Road AdministrationTypical view of Exclusive Motorcycle Lane
Reduction in Motorcycle fatalities -83%
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27Swedish Road Administration
2+1 roads
• First built in 1998• Now 2000 km• Up to 90% reduction in
fatalities• Production cost 200-300
US$/m• Popular among road users
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282010-03-26 Swedish Road Administration
Speed limit, road design and car design goes hand in hand!
• Crash test 90km/h into tree
• Crash test 90km/h into guard rail