Design guidelines for turbulence in traffic on Dutch motorways

Aries van Beinum, Fred Wegman

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)


Over the years the characteristics of traffic on Dutch motorways has changed, but its design guidelines did not develop as rapidly and large parts remain unchanged since the first guidelines from the 1970s. During the latest revision of the Dutch motorway design guidelines it became clear that a solid and comprehensive theoretical, or evidence based, background was lacking for the validity of the prescribed ramp spacing and required length for weaving segments. This article presents the underpinning of revising the Dutch design manual for motorways for turbulence in traffic. For this study loop detector data at eight on-ramps and five off-ramps were collected as well as empirical trajectory data at fourteen different on-ramps (three), off-ramps (three) and weaving segments (eight) in The Netherlands. The results show that the areas around ramps that are influenced by turbulence are smaller than described in the design manuals and that, in their present form, the microscopic simulation software packages VISSIM and MOTUS fail to simulate the number and location of lane-changes around ramps realistically.

Original languageEnglish
Article number105285
Number of pages10
JournalAccident Analysis and Prevention
Publication statusPublished - 2019

Bibliographical note

Accepted Author Manuscript


  • Design guidelines
  • Driving behaviour
  • Empirical
  • Microscopic simulation


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