Hartzog & Crabill

Hartzog & Crabill, Inc. (HCI) is a consulting engineering firm specializing in serving local government agencies with a full array of engineering services, including serving several of our client cities as contract City Traffic Engineer, contract City Engineer, and "on-call" City Traffic Engineer. Preparation and review of traffic signal and striping plans, specifications, and estimates (PS&E); development and design of traffic signal coordination systems; on-going remote and local (off-site/on-site) management of traffic signal systems; traffic control plans; warrant analyses for traffic control devices (i.e., traffic signals, flashing beacons, Stop signs, crosswalks; in-roadway warning lights, RRFBs, etc.); engineering and traffic surveys for establishing speed limits; traffic impact analyses; and assist cities with coordination of services completed by their traffic signal maintenance contractor.

From our Tustin office location, HCI continuously operates (12) local agencies' citywide traffic signal systems.

With over 40 years of experience, Mr. Hartzog is a recognized expert in traffic signal operations and in the preparation of construction plans, specifications, and cost estimates (PS&E) for traffic signal systems. His areas of expertise also include the development, implementation, and calibration of signal coordination timing.

HCI has extensive experience in the development of traffic engineering plans, such as new traffic signal, traffic signal modification, and signal interconnect, as these are among our firm's primary service products. For each of these types of plans, HCI includes technical provisions and engineer's estimates that complement each plan set providing complete PS&E ready for construction bidding on time and within the City's approved schedule.