that assumes you have full control of both hands and that the brakes are working as they shoud do...
(I had 11 ops on my left wrist/arm over 15 years and only have some use of the hand itself - one of the reasons I wear out cassettes and sprockets & my front brake blocks somewhat faster than I am meant to, I can't easily change gear with my left hand and can't brake with my left hand at all - also indicating right is an issue, though left is a doddle because I can easily take my bad arm off the bars! But don't take it to heart, I know you didn't know... (and it was one of the reasons I needed a custom buillt bike for my RTW tour).)
just wish I had known about recumbrants when I first injured my arm - it took me 5 years to be able to even ride a bike again and another 5 years to be able to ride on more than 15 miles simply because of the hand issues.