KOA has a reputation for innovation and leadership in the design and engineering of transportation systems throughout Southern California. For the past 30 years, we have demonstrated engineering leadership in all aspects of our streets and highways including traffic signals, intelligent transportation systems, communications, signal timing and operations, street lighting, intersection design, highway design, parking, worksite traffic control, active transportation and complete streets, transit systems, ADA compliance, and systemic safety analysis reporting.

We have worked for nearly every municipal agency in Southern California and also provide on-call services for many of them. Our designs and plans are known for their high quality and cost-effective use of resources and budgets.

Engineering Services

Traffic Signal Design
Signal Synchronization
Intelligent Transportation Systems (ITS)
Street Lighting
Signage & Striping

Roadway & Transportation Design
Intersection Design
Grade Separations
Traffic Control

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