CBB is a regional traffic engineering and transportation planning consultant firm headquartered in St. Louis, Missouri. We offer a wide range of transportation engineering and planning services to municipal, county, and state agencies, as well as to private industry and institutional clients. CBB is a 100 percent employee-owned firm. Our professional staff includes licensed Professional Engineers (PE), who are Professional Traffic Operations Engineers (PTOE), Road Safety Professionals (RSP2I & RSP2IB), and Professional Transportation Planners (PTP). We take pride in a free-thinking, innovative, and collaborative culture and strive to deliver transportation engineering and planning solutions for safer, more sustainable, and economically vibrant communities.