I came across a great article today on what types of bicycling infrastructure is the most preferred and compares it to what type of infrastructure is the safest. The studies cited go a little against conventional wisdom. I really thought the scatter plot chart below was telling and city transportation engineers and DOT's should take note.
The real surprise to me was that paved multi-use paths were the second most preferred type of infrastructure but they were also the second most dangerous.
Check out the article for an interesting read.
Dedicated Bike Lanes Can Cut Cycling Injuries in Half - The Atlantic Cities