the reports were sometimes incomplete or had not been sent to the land transport safety authority ltsa which was at that time responsible for the data entry coding and analysis of crash reports injuries were often inaccurately recorded if at all crash locations were often imprecise and bloodbreath alcohol levels and precrash speeds were not recorded in all cases this combination of underreporting of casualties and missing data resulted in important crash data not being captured understating both the actual levels of road trauma and crash contributing factors