ke Larsson Senior Advisor, Road Safety ke Larsson PIARC - PowerPoint PPT Presentation

Åke Larsson Senior Advisor, Road Safety Åke Larsson PIARC International Road Safety Seminar 1 BEIJING 18 – 20 October 2005

Accident type Killed per year, Swedish state roads 1995-98, % Run-off 30 Head-on 29 Overtake 4 Rear-end 1 Turn-off 4 Crossing 8 Bike 7 Pedestrian 8 Other 9 Total 100 Åke Larsson 2 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Speed The field of vision is decreasing at higher speed Åke Larsson 3 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Vertical Horizontal Vertical Horizon tal At direction changes the bend must be long enough to achieve harmonic alignment. Åke Larsson 4 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Vertical The effect of two circular bends with a short straight between (upper picture) and the same situation with only one continued circular bend with bigger radius (lower picture) Åke Larsson 5 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Good optical guidance and visibility is very important. Do not lead the traffic the wrong way! Åke Larsson (Photos H-J Vollpracht) 6 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Clearly visibility/recognizability from all approaches example of a junction in Romania with insufficient visibility Åke Larsson (Photos H-J Vollpracht) 7 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

As head-on collisions and run-off accidents are very common the use of median- and road side barriers are most important Åke Larsson 8 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

An example of a bad method for separation of traffic directions! The concrete barrier is too low and it has been several vehicles vaulting over it. A steel beam barrier had to be added to get the necessary height. Åke Larsson 9 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Safety zone (high standard) 70 km/h >7 m 90 km/h >9 m 1:2 1:6 110 km/h >10 m Flat slopes and no obstacles. Åke Larsson 10 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Safety zone (high standard radius > 1000 m) 70 km/h >7 m 90 km/h >9 m 110 km/h >11 m Åke Larsson 11 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

The road side barrier must be founded in such a way that a driver not will get behind it! Åke Larsson 12 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

The road side barrier must not leave a window open. Åke Larsson 13 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Do not leave a short gap in the road side barrier! Åke Larsson 14 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

A rock cutting is as hazardous as a steep slope! 15 Åke Larsson PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

• Separated laned in different directions • Non-hazardous road-side areas • Speed management Åke Larsson 16 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005

Internet: www.vagtrafikinspektionen.se E-mail: kontakt@vagtrafikinspektionen.se Phone: +46 243 780 00 Fax: +46 243 783 30 Åke Larsson 17 PIARC International Road Safety Seminar BEIJING 18 – 20 October 2005