Off the top of my head: instead of red-light cameras, extending the yellow lights by a second or two could be good; having a longer wait for the crossing light to turn green after the previous light turned red might be beneficial (if that makes any sense). Something that I saw in Montreal comes to mind for pedestrian safety: at the more dangerous or crowded intersections, give the pedestrian light a five second head start, and forbid turns until the light has turned green.

Sorry about the rambling; hopefully the points are clear.