A. Solowczuk, D. Kacprzak
Thursday 11 October 2018 by Libadmin2018


A quick development of motoring poses, particularly in cities, a number of transportation challenges involving traffic flow and maintaining its safety. To ensure road safety in streets facing transportation challenges, different systems of traffic calming have been successively introduced aiming at improvement of living and safety conditions. Suburban districts and housing estates are having their traffic arrangement plans changed. Traffic calming zones (e.g. Woonerven, stille veje, zones 30, home zones) are introduced to control throughways, local and internal roads, different systems of traffic arrangements at intersections, trying to find the best solutions of increasing problems. Raised areas are commonly used in zone 30 as traffic calming devices. The solution was used several years ago at Łukasińskiego Street in Szczecin. It is a suburban street that connects two areas of detached and terraced houses. The street is characterized with many junctions with local streets of low traffic volumes, many public driveways leading to supermarkets, and gated communities of terraced and detached houses. Speeds reached by motorists before its reconstruction were often approximately 60-70 km/h, which inevitably posed fundamental problems with maintaining safety of pedestrians and joining the traffic out of side streets. For these reasons, the local authorities decided to introduce zone 30 in the street and to build four sections of raised road surface, made of paving stone cubes. The authors conducted speed measurements of free movement of traffic at Łukasińskiego Street to demonstrate whether the applied raised areas had an effect of speed reduction. The present paper evaluates the effectiveness of the four successive raised areas in terms of real traffic calming.

Keywords: zone 30, speed reduction, speed bumps, raised area

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