On June, 24 a new bridge across the Lek river at Vianen was opened. This opening has the effect of clearing a major congestion point in the road network. A before and after study of the effects of this opening has been organized. The before study in 1981 consists of mailed questionnaire surveys among passenger cars and freight traffic and among train users, and an additional home interview survey among a small fraction of the respondents, stratified into specific subgroups.
Samenvatting