KOA Corporation - Transportation Planning, Traffic Engineering KOA, KOA Corporation, Katz Okitsu, Transportation planning, Traffic engineer, Traffic engineering, Traffic , Traffic calming , Traffic impact , Parking study, Signal timing, Synchronization, Traffic signal, Highway design, Roadway design, Intersection design, Intersection improvement, Traffic circulation , Consulting engineer, California engineer, Civil engineer, Civil engineering, Bikeway , Pedestrian, Safe routes , Crosswalk, In-ground flasher, Street lighting, Corridor study, Transit study, Congestion management , Congestion mitigation, FreQ, Synchro , Traffix, Traffic simulation, Traffic modeling, BRT, Bus Rapid Transit, LRT, Light Rail Transit, ITS, Intelligent Transportation System, PSR , Project Study Report, Traffic management KOA provides planning and engineering consulting services to public and private sector clients, specializing in traffic engineering, transportation planning and street and roadway design.