Søren Underlien Jensen

The Danish Road Directorate sponsored a study to develop methods for quantifying car drivers’ experienced level of service on freeways. The results provide a measure of how well freeways accommodate car travel. To determine how traffic operations, geometric conditions, and other variables affect car drivers’ satisfaction, 188 randomly selected resp...

May roundabouts be safer for cyclists than intersections? How are safe roundabouts designed? This paper tries to answer these questions on the basis of a before-after safety study of conversions of intersections to 255 single-lane roundabouts in Denmark. The before-after study accounts for long-term accident and injury trends and regression-to-the-...

Accidents between right-turning motor vehicles and straight-ahead cyclists are one of the most common accident types leading to cyclist injuries at signalised junctions in Denmark. A before-after safety evaluation of applying staggered stop lines in 189 arms at 123 signalised junctions is presented. The evaluation accounts for long-term accident tr...

A before after crash study of converting intersections to roundabouts was carried out in Denmark. Correction factors were estimated on the basis of 32 general comparison groups in this nonexperimental observational study. The correction factors were used to account for general crash trends and regression-to-the-mean effects. The study included 332...

This paper presents a before-after accident study of marking blue cycle crossings in 65 signalised junctions. Corrections factors for changes in traffic volumes and accident/injury trends are included using a general comparison group in this non-experimental observational study. Analysis of long-term accident trends point towards no overall abnorma...

Danish children walk and cycle a lot and at the same time have one of the best child road safety records in the western part of world. Based on several studies, the paper describes how Denmark has obtained a good child road safety and why Danish children choose to walk and cycle. Child road safety has predominantly been improved due to higher seat...

The Danish Road Directorate sponsored a study to develop methods for objectively quantifying pedestrian and bicyclist stated satisfaction with road sections between intersections. The results provide a measure of how well urban and rural roads accommodate pedestrian and bicycle travel. To determine how existing traffic operations, geometric conditi...

This before-and-after study covers the construction of one-way cycle tracks and lanes, blue cycle crossings and raised exits. It is the biggest study of its kind so far carried out in Denmark. The effects on road safety of all types of traffic both at junctions and on road sections for both accidents and injuries are examined. The effects on the vo...

The number of pedestrian injuries has decreased since the mid-1960s in Denmark. Danish travel surveys show that Danes walk fewer and fewer kilometers; hence, the injury rate for pedestrians has remained almost unchanged since 1980. Results are presented from a comparison study on road safety, modal split, demography, and so forth in 47 Danish citie...

Projektmål og aktiviteter I perioden 1999-2002 var Odense officielt Danmarks Nationale Cykelby. Odense Kommune fik tildelt halvdelen af det samlede budget på 20 mio. kr. som tilskud fra Trafikministeriet og Vejdirektoratet. Projektets mål var: • Borgere i Odense Kommune skal efter eget udsagn opleve en forbedring i trivsel og velvaere. • Antallet a...