"Dale Byrne, Carmel’s mayor, called the issue a matter of public safety. In an interview, he recalled an episode from July when he was visiting a friend’s home..."

"... and the man suddenly turned pale, losing consciousness. Mr. Byrne called 911 and tried to describe the location where the ambulance should arrive, but the dispatcher did not understand how to find the home without an address. He was transferred to another dispatcher, then another. 'He could have had a heart attack, and you’re asking me to explain how my street address works,' Mr. Byrne recalled."

From "After 110 Years, a California Coastal Village Yields to Street Numbers/Driven by emergency response needs, Carmel-by-the-Sea reluctantly adopted street address numbers this summer, igniting concerns over its vanishing identity as a beachside village" (NYT).