In an effort to reduce crashes and ease traffic congestion on our nation's highways, traffic engineers and planners have traditionally pursued a wide range of actions. In some cases, the most cost-effective solution requires a significant investment in public funds. In other cases, the most cost-effective solution can be achieved through implementation of lower cost solutions. The purpose of this report is to share approaches that have been implemented to provide low cost solutions for improving safety and traffic flow. The report is designed to serve as a primer, or basic introduction, to the subject of low cost traffic engineering improvements. The goal is to provide practicing traffic engineers and planners with information describing the types of low cost actions that have been implemented, along with their cost and benefits.