Just to add to this, there have been some ideas floating recently to move the cyclers below the streets [1] or above them [2], but while the former is unworkable, it's hard to say if anything comes out of the latter.
[1] http://www.bbc.co.uk/news/uk-england-london-31298695 [2] http://www.bbc.co.uk/news/uk-england-london-25549789
In London the cycle lanes are painted onto the roads, you take your chances with the cars.
The paint might help to be fair. But decent infrastructure would save more lives.