Abel Sierra has 5 years of professional experience with Choice Engineering. He has acquired considerable experience in traffic data collection. He collects, computes, analyzes and interprets various types of vehicular and pedestrian traffic flow, including turning movement counts, travel time & delay counts, pedestrian/bicycle counts, and others. He has extensive experience using MicroStation to prepare existing conditions and collision diagrams. He has adequate skills in the preparation of various tables and figures to summarize traffic and collision data.