If you are transporting a patient or responding to an emergency call, you may drive faster than posted speed limits and drive through red traffic lights or past stop signs if you warn other drivers with your vehicle’s siren and flashing red lights. Before taking such risky actions, however, consider such factors as (a) the condition and use of the roadway; (b) the amount of traffic that’s on, or is expected to be on, the roadway; and (c) the seriousness of the emergency to which you’re responding