Someone ran the red light; was it the moped rider or automobile driver? There is a traffic camera at that interesection.  Why isn't ALL Oahu road and freeway cameras recording 24 hours/ day on cheap hard drives and then overwrite older video when the disks are full.  There would be no need for police to close streets or freeways for hours and hours to investigate when a clear video of the accident for most cases would determine exactly what happened and who was at fault immediately.