Uppföljning av trafiksäkerheten i Kungsbacka tätort

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Hans Thulin
Alexander Obrenovic

At the request of Kungsbacka Municipality, VTI has monitored the traffic safety situation in Kungsbacka urban area. The investigation has been confined to the town centre. The Onsala Interchange which is situated about 10 km outside the centre is also included in the investigation. During the past 5-10 years comprehensive measures have been taken in the central parts of Kungsbacka to enhance safety. The junction of Vallgatan and Varbergsvägen has been closed to reduce through traffic in the town centre, and Varbergsvägen has been realigned. A pedestrian and cycle tunnel has been installed under the new alignment of Varbergsvägen. Roundabouts have been constructed, the level of junctions and pedestrian and cycle crossings have been raised, and a 30 km/h speed limit has been introduced in the town centre. The Institute has previously made a condition assessment and analysis of the traffic and traffic safety situation in the central parts of the town on behalf of the Municipality. That investigation was carried out in 1991 and was arranged as a preliminary investigation to be used as the basis in a future follow-up. The present, follow-up, investigation has been made by the same method as that used in the preliminary investigation, which involved, inter alia, videoing the traffic in the central parts. A total of 15 junctions have been filmed. The results of these films have been used as the basis in studies of the interplay between vulnerable road users and motor vehicles and of the safety situation this gave rise to. The results have also been used as the basis in traffic and road user counts. Video films were taken in the same week and on the same weekdays during the before and after measurements, and at the same times in the day. In the after measurements, after the measures had been taken, running speeds were measured on the streets that included the videoed places. An assessment was made, based on the knowledge available, of the effect of a specific measure on the speed level. Together with the results obtained from evaluating the video material, the results of speed measurements have been used in determining the safety effect of the measures that have been taken.

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