The Safety Implications of Truck Regulations report is now available. This study considers two truck regulations of timely interest: truck speed limitations (speed limiter devices and differential speed limits), and truck lane restrictions (right lane only laws). Key factors related to implementation of the regulations, stakeholder opinions, summary of findings from past studies are presented followed by analysis of safety and crash statistics. In addition to a region-wide analysis of crash data, corridor specific analysis results are also presented for five multistate corridors: I-70, I-75, I-80, I-90, and I-94.