Dan Henry

{{For|the wristwatch manufacturer|Dan Henry Watches}}

Dan Henry (1913-2012) is the inventor of directional pavement markings commonly used to guide participants along the route of organized bicycling events. The markers themselves are usually called Dan Henry Arrows.{{cite web |last=Henry |first=Dan |url=http://home.earthlink.net/~veloise/Dan%20Henry%20arrow%20article.pdf |title=Bicycle USA, September, 1985 |publisher=League of American Wheelmen |accessdate=2014-07-04 |archive-url=https://web.archive.org/web/20170329013420/http://home.earthlink.net/~veloise/Dan%20Henry%20arrow%20article.pdf |archive-date=2017-03-29 |url-status=dead }}

Image:DanHenryArrows.jpg Originally, the markings consisted of a circle with a vertical line from the edge of the circle pointing in the direction of travel (straight ahead, left turn, right turn). Other common markings are a circle X to denote wrong way, and a circled horizontal line to denote caution.

Variations on the circle pattern developed to differentiate between different rides as more and more rides began to use the same roads. Variations include color, triangles, squares, letters, etc.{{Cite web |url=http://www.tulsabicycleclub.com/misc_dan_henry.php |title=Dan Henry Arrow—Illustration |access-date=2006-05-28 |archive-url=https://web.archive.org/web/20060514141041/http://www.tulsabicycleclub.com/misc_dan_henry.php |archive-date=2006-05-14 |url-status=dead }}

Other cycling related inventions by Henry include front and rear suspension systems and the 'sling' saddle.{{cite web|last=Fertig |first=Ralph |url=http://www.sbbike.org/QR/1999/9907/9907.html#101 |title=Quick Release, July 1999 |publisher=Sbbike.org |accessdate=2012-11-04 |url-status=dead |archiveurl=https://web.archive.org/web/20120204191120/http://www.sbbike.org/QR/1999/9907/9907.html |archivedate=2012-02-04 }}

Henry worked as a commercial pilot, starting in the 1920s, later on DC-2 and DC-3 aircraft and the Boeing 707 jetliner{{cite web|title=2013 Solvang Century Dedication, Solvang's Grand Old Man of Cycling |url=http://www.bikescor.com/dedication |publisher=SCOR Cardiac Cyclists Club |accessdate=2014-07-04 |url-status=dead |archiveurl=https://web.archive.org/web/20140714170554/http://www.bikescor.com/dedication |archivedate=2014-07-14 }}{{cite web| url=http://syvnews.com/news/local/cycling-legend-dan-henry-to-be-buried-friday/article_819c0e80-6d7b-11e1-bb46-001871e3ce6c.html |title=Cycling legend Dan Henry to be buried Friday |publisher=Santa Ynez Valley News |date= |accessdate=2014-07-04}}

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