LSC provides consulting services in all phases of transportation planning and traffic engineering throughout the western United States. With three offices in Colorado and California, the goal of the Firm is to perform highly competent planning and engineering services within the transportation field. The Firm is the successor to Leigh Associates and Leigh, Scott & Cleary, Inc. and has provided consulting services continuously since 1975.

LSC provides services to government agencies, private organizations and individuals in traffic engineering, traffic systems management, traffic signal design, multimodal transportation planning, transit planning and operations, parking analysis and parking feasibility reports, parking facility design, traffic impact studies, access planning and design, and bicycle/pedestrian circulation. The Firm's strength lies in the staff's broad range of professional experience. Transportation planning and traffic engineering studies requiring a timely, personal response by experienced professionals are the company's specialties. We take pride in offering the sensitivity, flexibility, and innovative ability that small firms characteristically best provide.