Dan Henry

Dan Henry (1913-2012) is the inventor of directional pavement markings commonly used to guide participants along the route of organized bicycling events.

[2] Other cycling related inventions by Henry include front and rear suspension systems and the 'sling' saddle.

[3] Henry worked as a commercial pilot, starting in the 1920s, later on DC-2 and DC-3 aircraft and the Boeing 707 jetliner[4][5] .

The League of American Wheelmen awarded Henry its Paul Dudley White Medal in 1992[6] and a bike route in the Santa Ynez Valley has been named for him.

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An example "Dan Henrys" for six different routes. All indicate the same direction of travel.