Designing a safe system

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Designing a safe system

• Roger Johansson
• Road Safety Division
• Swedish Road Administration
• International Road Safety Symposium
• Making Roads Safe...Towards Zero Fatalities on
  the Road
• Great Arsenal, Chania, Crete, October 29th 2008

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Designing a Safe System

• 5 star roads
• 5 star vehicles
• 5 star use

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Vision Zero philosophyIntegration and Separation.

• Vulnerable road users should not be exposed to
  motorised vehicles at speeds exceeding 30 km/h
• If 1. cannot be satisfied then separate or reduce
  vehicle speed to 30 km/h
• Car occupants should not be exposed to other
  motorised vehicles at speeds exceeding 50 km/h in
  90 degree intersections
• If 3. cannot be satisfied then separate or reduce
  angle or reduce speed to 50 km/h

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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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21 roads

• First built in 1998
• Now 1900 km
• Up to 90 reduction in fatalities
• Production cost 200-300 US/m
• Popular among road users

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5 star use

• Seat belt (seat belt reminder)
• Alcohol (alcohol locks)
• Effective speed enforcement (speed cameras)
• ESC stability control
• Many new systems entering market (e.g. Volvo has
  a 2020 vision no one killed in a Volvo)

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Present status in Sweden

• About 30 of traffic have 555 status (-10
  fatalities)
• Less than 1 have 111 status (100 fatalities)
• Remaining 69 (300 fatalities) 554, 545, 455,
  544, etc

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Should we increase 555 or reduce 111?

• Roads traffic volume x risk reduction
• Cars separate strategy for taking cars out of
  traffic
• Use generally easier to increase safe use (e.g.
  4 to 5) than to avoid very unsafe use

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Future direction

• Vulnerable Road Users 0-14 years - soon OK
  (-10yrs)
• Car occupants 25 years on major roads in newer
  cars - soon OK (-10-20yrs)
• Pedestrians soon OK (-15-20yrs)

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Future direction (cont.)

• Two-wheelers not OK (strategy needed)
• Trucks not OK (strategy needed)

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New target for 2020

• Suggestion max 220 fatalities (2,3/100000 inh)
• 13 major target areas
• Stakeholder performance indicators

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Thank you for listening!

• roger.johansson_at_vv.se
• www.vv.se