THE SECURITY TRAFFIC ENGINEER IS PRIMARILY CONCERNED WITH THE DISCOVERY AND REMEDY OF ACCIDENT AND CONGESTION HAZARDS, USING THE METHODS OF SURVEYS, STUDIES, TABULATIONS, ANALYSIS, AND OBSERVATION OF THE CHARACTERISTICS OF ROADWAYS, VEHICLES, AND DRIVERS. ALTHOUGH SECURITY OFFICERS ARE NOT TRAINED AS ENGINEERS, THEY HAVE RESPONSIBILITY FOR THE SAFE AND EFFICIENT USE OF ROADS AND PARKING LOTS UNDER THEIR JURISDICTION. SINCE GOVERNMENT ENGINEERING DEPARTMENTS DO NOT HAVE A CONTINUING RESPONSIBILITY FOR ROAD SAFETY ON PRIVATE PROPERTY, THE IMPORTANCE OF SECURITY TRAFFIC ENGINEERING IS MAGNIFIED. SECURITY OFFICERS SHOULD OBSERVE ACTUAL OR POTENTIAL TRAFFIC ENGINEERING DEFICIENCIES AND TAKE CORRECTIVE ACTION. ACCIDENT ANALYSIS USING A PIN MAP MAY BE SUFFICIENT TO SPOT AN ENGINEERING PROBLEM AND FORMULATE A RECOMMENDATION. SOME EXAMPLES OF INADEQUACIES AND IMPROVEMENTS WHICH A SECURITY OFFICER CAN REPORT ARE A TRAFFIC CONTROL DEVICE WHICH IS OBSCURED, DAMAGED, MISSING, MALFUNCTIONING OR IMPROPERLY PLACED OR TIMED; THE NEED FOR NO-PARKING ZONES TO IMPROVE THE TRAFFIC FLOW; THE NEED FOR NEW LANE MARKINGS OR REPAINTING OF EXISTING MARKINGS; RECOGNITION OF ROADWAY AND ROADSIDE HAZARDS AND SUGGESTED REMEDIES; AND THE NEED FOR NEW TRAFFIC CONTROL DEVICES, BARRIERS, OR OTHER MARKINGS TO REDUCE ACCIDENTS. DIAGRAMS COMPLEMENT THE TEXT. A GLOSSARY OF TRAFFIC ENGINEERING TERMS IS PROVIDED, AND BARRIERS FOR USE IN REDUCING RIGHT-OF-WAY CONFLICT AND IMPROVING TRAFFIC FLOW ARE DESCRIBED. TYPES OF LONGITUDINAL ROADWAY LINES ARE ALSO LISTED. FOOTNOTES ARE PROVIDED. (RCB)