The relationship between cycle track width and the lateral position of cyclists, and implications for the required cycle track width

Sufficient cycle track width is important to prevent single-bicycle crashes and collisions between cyclists. The assumptions on which the minimum width is based in guidelines is founded on only a few studies. The aim of the present study is to investigate the relationship between cycle track width and lateral position of cyclists. Method: We...

An experiment on the lateral steering behaviour of cyclists on narrow bidirectional cycle tracks

Cycling contributes to public health because it requires physical effort [1] and offers economic and environmental advantages over motorized transport [2]. However, 41,000 cyclists die every year in traffic crashes, 3% of the total worldwide [3]. Most fatal bicycle crashes are collisions with motor vehicles. Severe injuries among cyclists,...

Speed development at freeway curves based on high frequency floating car data

Road designers need to have insights where deceleration and acceleration are expected related to the position of the curve, and in in which amount so that drivers are able to safely decelerate and accelerate respectively into and out of a freeway curve. For this, empirical speed data is needed. Therefore, Floating Car Data in 153 curves in...

The significance of induced demand in road design: a viewpoint comparison

In this thesis, the significance of the so-called ‘induced demand’ phenomenon is discussed. This phenomenon can occur when a stretch of road which is prone to congestion is widened. Although this widening should in theory solve congestion problems, it can often spawn additional effects, typically undesired and occasionally unforeseen. These...

“Everything somewhere” or “something everywhere”: Examining the implications of automated vehicles’ deployment strategies

“Everything somewhere” or “something everywhere” is the classic dilemma concerning the development and implementation of the future generation of vehicles, i.e., automated vehicles (AVs). Both strategies include diverse policy options that could significantly impact road networks’ planning, design, operation, and utilization. Until now, no...

Car-following behavioural adaptation when driving next to automated vehicles on a dedicated lane on motorways: A driving simulator study in the Netherlands

Automated vehicles (AVs) are expected to improve traffic flow efficiency and safety. The deployment of AVs on motorways is expected to be the first step in their implementation. One of the main concerns is how human drivers will interact with AVs. Dedicating specific lanes to AVs have been suggested as a possible solution. However, there is...

Road Infrastructure Requirements for Improved Performance of Lane Assistance Systems

There is a pressing need for road authorities to take a proactive role in the deployment of automated vehicles on the existing road network. This requires a comprehensive understanding of the road infrastructure requirements that would lead to safe operation of automated vehicles. In this context, a field test with Lane Departure Warning and...

Integration of Fleet Production and Cost Analysis in Mine Design and Planning

An investigation in the possibility to integrate fleet selection (through FPC) in the mine design process, allowing for the analysis of various potential haul road scenarios and from there being able to make a decision on an optimal fleet selection.

Golden Green: drawing upon lane design principles to design integral sustainable roads

The Utrechtseweg provincial road is situated in the centre of the Netherlands, following the edges of the lateral moraines of both the Utrechtse Heuvelrug and the Veluwe massief. The road has a long history as being bo a landscape structuring lane and the main road infrastructure between the cities of Utrecht, Arnhem, and Zutphen, and the...

The road safety of merging tapers: Measuring the effect of varying geometric designs and traffic conditions on driving behaviour at merging tapers

In Dutch design guidelines it is presumed that merging tapers are unsafe compared to the standard merger design. However, this presumption is not scientifically underpinned and therefore it is unclear whether this presumption is correct and if merging tapers are indeed unsafe. Design guidelines for merging tapers are neither scientifically...

Silver Road Design: Elderly Friendly Highway Design

Elderly Friendly Highway Design (EFHD) is done for Rijkswaterstaat. The EFHD project explores elderly drivers’ problems in the driving on highways and makes suggestions to RWS designers so as that they could take into account elderly drivers when designing and rebuilding Dutch highway in the future. Through the literature research, observational...