How? To a good approximation even on a complete deathtrap of a road that has a 99% chance of killing you in a year of daily commuting (which would be difficult to even to design on purpose, much less accidentally come into being as a legal road) has less than a 2% chance of killing you in a single day.

Sorry, but I find it hard to believe that a road with a 99% chance of killing a cyclist in a year of commuting wouldn't also be a bloodbath for motorists. I mean, the only way it could possibly be so dangerous is if several motorists having engine trouble are killed on it every month and such a road would almost certainly be shut down immediately for safety modifications and would unquestionably disallow slow moving vehicles like bicycles.