This report of findings documents the opinions and understandings of study participants regarding the extent and effectiveness of uniformed police officers (UPO) on Federal-aid highway construction projects. Survey data indicates the majority of states use uniformed police officers in at least some work zones where there are particular traffic safety concerns. Specific policies and procedures vary widely among the states, although “hireback” programs, where the State highway agency provides funding to pay off-duty State Police Officers, are most common. Uniformed police officers most often are used in work zones with high speed, high traffic volume, and where there are lane closures or nighttime operations unprotected by concrete barrier. A small number of agencies utilize police officers on all highway work zones. The major study participants (State highway agencies, State law enforcement agencies, highway industry associations, law enforcement organizations, contractors and suppliers) appear to be in agreement that the presence of uniformed officers on Federal-aid highway construction projects enhances public safety, although there is little quantified data to confirm these positive effects. Key issues related to the use of police officers are identified, and policy recommendations are presented within this report.