Genomfarter i tätort

Sammanfattning: The Vision Zero was initiated in 1997 with the aim that no loss of life or seriously injured are acceptable in the transportation system. To improve the traffic safety the National road administration in Sweden, Trafikverket, has defined two areas with considerable potential to change the traffic safety situation and reduce number of people killed in traffic. These are lower “average speed” and higher “speed compliance”. Research of today has found a strong correlation between traffic safety and the level of speed. This thesis focus on the effects the road design on a thoroughfare will have on the traffic safety, indicated by speed. Three questions of issue were selected: Where in urban areas does the highest and lowest speed level occur? How does the speed vary with the above mentioned design parameters? How can the speed be reduced in the most effective way? Almost 150 lives could be spared if all the motorists would comply with the speed limits. Two thirds of all the fatal accidents in traffic in build-up areas are unprotected road users. The main question is therefore; how does the speed vary along a thoroughfare and in which way can it be reduced to improve the safety for the unprotected traffic users?