Speed humps belong in the purview of Traffic Engineering, period.  AFD has no business having veto power over them; that authority was slid through by incorporating the latest International Fire Code as Muni Code. High speed neighborhood traffic is one if not the single most consistent issue raised by citizens and has been for the 25+ years of my Community Council service. I served on the commission that developed the "toolbox" for Traffic Calming; the speed hump emerged as the single most effective bang for the buck item in it.  Agencies screamed and wrung their hands with none of the "issues" ever amounting to much if anything. Graders have a float selection for winter, first responders either slow a bit or take more appropriate routes in the first place.  Speed humps tamed my street from a raceway with vehicles documented at 51 mph to the current average appropriate to 25 mph residential streets. On duty 24X365, they never rest nor give up.