Provide technical direction, expertise and mentoring relating to traffic analysis models (using Synchro, PTV Vissim, etc.), traffic signal design and specification preparation, traffic management plan design, and signs and pavement markings design. Fueled by high quality delivery, exceptional client retention, and strategic acquisitions, Apex Companies continues to rank among the fastest-growing firms in the AEC industry, recently recognized by the Zweig Group for our industry-leading growth.