Canada

My "clueless" suggestion was to try to mitigate your "what if". I have no qualms about putting in speed bumps, narrowing the lanes and NOT provide a passing lane for emergency vehicles. You can use physical, controllable barriers to work within the same radio controlled infrastructure that already exists in many places that emergency vehicles use to communicate with traffic signals. There are retractable bollards, or even gates that can prevent normal access to the passing lane if you INSIST on a passing lane and preventing assholes.

Slowing down for a couple speed bumps will not significantly impact emergencies in most cases. If you have /data/ that demonstrates otherwise, please provide it.