crashes on all known roundabouts built in the Netherlands during the period of 1999 to 2005,
not just a sample. Before and after crash and … This study reviews the overall effects on
road casualties of roundabouts built in the Netherlands during the period of 1999 to 2005,
for which before and after crash and roundabout location information is available. Since all
roundabouts constructed during this period are included in the analysis, rather than a (limited) …