EXtensible Markup Language (XML) tends to become a standard way of data interchanging on the Web. XQuery is the W3C standard to retrieve information from XML documents. Moreover, graphical user interfaces are user friendly enough for naive users to use them. Thus, a graphical query language for XML documents is a very interesting research field. In this paper we introduce KINISIS a new graphical query language which is designed and implemented upon XQuery which uses metaphors extracted from the road traffic act. Moreover, we present the results of the controlled experiment that we developed in order to evaluate KINISIS usability against XQuery.