Welcome to Hartzog & Crabhill Inc! Established in 1993, Hartzog & Crabhill Inc has been servicing the community of Tustin, California, and the surrounding areas for over 20 years! We are a firm specializing in traffic engineering and transportation planning, providing safe and desirable solutions for traffic and road systems. We believe in providing a thorough, well-thought-out plan in regards to traffic control devices, traffic signals, crosswalks, and more. With Hartzog & Crabhill Inc, you know you are in good hands. If you are looking for experienced, dedicated professionals with the will to get the job done, then we would love to be of assistance. Call us today to see why we are leading the way in traffic systems!