Anyone else think it's unnecessary that ambulances are shooting around with only their flashing lights to warn people? As a cyclist or a driver, I appreciate a full warning. I'm not going to notice the flashing blue lights coming up behind me as a cyclist, and as a motorist, it'd be hit and miss (hopefully miss). The more warning I get, the better. If they're worried about disturbing people, maybe they could compromise the volume - something is better than nothing.
The other night, I encountered one at a dark cross-road with no way to check what's coming left and right, and also no inclination, since my light was on green, so I just cycled on through its path... If the timings were a bit different, they could have needed another ambulance or two!