Free Publications for Engineers NSPE offers free publications on a variety of engineering topics. View or download free publications: Autonomous Vehicles: A Public Regulatory Policy Guide 2.8 MB Professional Engineering Body of Knowledge 1.4 MB Professional Engineering Body of Knowledge E-Book 932 KB Blockchain Technology: Implications and Opportunities For Professional Engineers 1.13 MB Engineering Credentials 3.53 MB Document Retention Guidelines 99 KB Insuring Technology Risks in a Professional Environment 119 KB