If you click on a section of the generated route a dialog box will appear allowing you to rate that section's perceived safety on a scale of 1-7, this will affect future generated routes. Also the system tends to prefer residential streets and cycleways over major roads, and prefers roads with bike lanes or signed bicycle routes.
OpenStreetMap
Discussion
Reäksje fan wieland op 22 maart 2010 om 08.58 oere
How do they know, which way is safer?
Reäksje fan andrewpmk op 23 maart 2010 om 03.51 oere
If you click on a section of the generated route a dialog box will appear allowing you to rate that section's perceived safety on a scale of 1-7, this will affect future generated routes. Also the system tends to prefer residential streets and cycleways over major roads, and prefers roads with bike lanes or signed bicycle routes.
Reäksje fan wieland op 23 maart 2010 om 21.06 oere
@andrew: Thanks