The Tallinn Urban Environment and Public Works Department commissioned design documentation for the reconstruction of Tulika Street, which was intended to provide for a complete overhaul of the traffic environment. After the documentation was finished, the city government became concerned as to whether the capacity of the reconstructed street would be sufficient for the projected traffic demand and what the reduced road capacity would mean for the neighbouring streets. A call for tenders for a traffic survey was launched and the contract was awarded to K-Projekt. We forecasted traffic volumes in the area using a traffic model and prepared a micro-simulation. The simulation revealed the places that would present the greatest bottlenecks for car traffic. Based on the information collected during the survey, the Tallinn Urban Environment and Public Works Department ordered changes to the reconstruction design documentation, which will increase the capacity of the street.