Current understanding of effectiveness of measures to promote active travel
or increase safety is limited. Safety evaluations in particular are challenging,
because crashes are rare events and challenging to measure in parallel with
possible explanatory factors. Videoanalysis is a promising method to overcome
several challenges, such as sufficient sample size and accurate, object measures
of conflicts. VALVE is a series of exploratory evaluations of cycling infrastructures
which equally aim at evaluating these measures as well as assessing the feasibility
and improving the methodology.