The report discusses the safety improvements that can be made to trucks used in urban and rural areas. It argues that trucks with extended fronts are safer, but it also reviews the regulations and accident data to support this claim. The report identifies various safety systems that can enhance the safety of heavy trucks, including active and passive safety systems. It also examines the best safety conditions to meet in the event of exemption of vehicle length, focusing on protecting unprotected road users such as pedestrians and cyclists. The report concludes with discussions, conclusions, and recommendations for improving the safety of commercial vehicles.