What is Traffic Engineering?
Traffic: Engineering
Traffic Engineering is that phase of engineering which deals with the planning, geometric design and traffic operations of roads, streets, and highways, their networks, terminals, abutting lands and relationships with other modes of transportation for the achievement of safe, efficient, and convenient movement of persons and goods. 

Traffic Engineering applies engineering principles to help solve transportation problems, and brings into play a knowledge of psychology and habits of users of the transportation systems.

WHY IS TRAFFIC ENGINEERING ESSENTIAL?

Many persons still wonder why a traffic problem is so difficult that an engineer should be called upon for a solution. Why not just install a traffic signal, or raise/lower the speed limit, or erect more signs? 

One of the greatest obstacles a professional traffic engineer faces in applying sound principles of traffic engineering is the fact that "everyone is a traffic expert!" The unfortunate result of this attitude of expertise is the creation of traffic hazards when false theories of individuals or groups are put into effect. 

Whenever unnecessary or excessive traffic controls are installed, hazardous traffic conditions usually result.

HOW DOES THE TRAFFIC ENGINEER SOLVE TRAFFIC PROBLEMS?

The role of the traffic engineer may be compared to that of the medical profession in protecting the public. As a trained professional he/she looks at the symptoms, and in order to make a competent diagnosis she/he takes traffic counts, analyzes accident statistics, studies speed data, examines roadway conditions, conducts research, and studies what other professionals are doing and the results they have achieved. 

Just as the doctor's decision is accepted in matters regarding health, even though the medicine may be bitter or the needle painful, so should the decision of the, professional traffic engineer be given the prime consideration.

HOW DOES THE TRAFFIC ENGINEER PROMOTE SAFER TRAFFIC OPERATION?

By providing roadway conditions that contribute to smooth and efficient traffic flow. 

Experience has shown that safety goes hand-in-hand with smooth traffic operation. Disrupting the smooth flow of traffic increases the probability of accidents. 

Erratic traffic operation may be caused by vehicles stopping or slowing in the roadway, passing and weaving maneuvers, or surprise elements. For example, unwarranted traffic signals, unreasonably low speed limits, and too many signs may cause driver confusion and indecision. 

Slower speed does not necessarily mean safer traffic operation. The chances of a driver becoming involved in an accident are least when he/she is traveling at the average speed of traffic.
Created on Aug.  4, 2002 at  5:41 PM (PDT). Last updated by CityEngineer on May  4, 2010 at  9:58 AM (PDT). Owned by cmcmahon@ci.cypress.ca.us.
Catherine McMahon
Public Works Director
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