Two generations ago, heart rate monitors were clunky devices found only in hospitals and sport science labs. A generation ago, power meters were for WorldTour pros and a few weekend warriors with plenty of extra cash to burn. Until about a decade ago, a bike-mounted rear-facing radar that gave you early warning to traffic approaching from behind was science fiction.
Sure, riding L’Eroica—on a steel bike with downtube friction shifters, wearing wood and wool—may be a fun experience. But have you ever wondered if you could be safer on your daily jaunt?
