The Impact assessment support study for the revision of Directive (EU) 2015/413 analyses the problems identified in detection of specific road-safety-related traffic offences (‘detection phase’), cross-border investigation (‘investigation phase’) of these offences and cross-border enforcement of imposed sanctions (‘enforcement phase’). Three policy options, including relevant sub-options, are proposed to address the objectives of the revision. The preferred option consists of measures to improve the control of compliance with road-safety-related traffic rules in place and establishes streamlined mutual assistance and recognition procedures between Member States (‘Lex Specialis’) to improve cooperation in the cross-border investigation phase.