<p>Several diverse works were proposed for the discovery of traffic flow patterns from trajectory data collected from moving objects over urban road networks using different approaches. More recently, a few works have focused on the discovery of movement patterns considering additional sources of data to spatiotemporal trajectories, referred to as semantic data. The semantic data considered in these works is associated with each spatiotemporal position from the trajectories. Modern technologies enable the collection of additional data related to each moving object or the performed trip, which could enhance available traffic flow patterns from a different context. In this work, we present a model for the discovery of high traffic flow patterns from moving objects’ trajectory data over a road network, semantically described by the moving objects or trip data associated with the trajectories. We focus on a model based on traffic flow in order to incorporate the identification of semantic description as part of the discovery of the patterns. Discovered patterns from experimentation show different advantages, for instance, allowing identification of particular semantic descriptions between close patterns in the road network. Results show the potential for improved applications of the discovered patterns based on the available semantic data, including campaigns for promoting better use of the road network and reorganization of areas considering different semantic descriptions.</p>