or... just add them to main roads like is normal elsewhere
https://www.google.com/search?q=netherlands+cycling+lanes&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjV3NqQlLTiAhXkuXEKHcHwDMQQ_AUIDigB&biw=1366&bih=625
https://www.google.com/search?q=denmark+cycling+lanes&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjJ-PuTlLTiAhWOURUIHVUPAhsQ_AUIDigB&biw=1366&bih=625
https://www.google.com/search?biw=1366&bih=625&tbm=isch&sa=1&ei=tOLnXKLcO4-rgwekiY6oBA&q=segregated+bike+lanes&oq=segr&gs_l=img.1.1.0j0i67j0l8.11430.12561..14454...1.0..1.331.1198.0j2j2j1......0....1..gws-wiz-img.lZTciXg3Gcc |