08-19-2017, 10:19 AM
(08-18-2017, 10:08 PM)tomh009 Wrote:(08-18-2017, 06:13 PM)danbrotherston Wrote: No, the bike lane is too narrow for that, and a barrier would require the engineers to add more space to the vehicle lane (don't get me started), and there isn't more space either.
How much room does a barrier take? 20cm? Even if you couldn't get any of that space from the vehicle lane (and really taking 10 cm from there should be a non-issue) that would leave 1.3m for the protected bike lane. How much space does a protected bike lane need in order to be usable?
So it depends on what type of barrier. You might be able to fit flex posts in 20 cm, but something like a curb takes 0.5 meters. Jersey barriers take even more.
A 1.3 m bike lane might be okay in some contexts, but between two barriers on a substantial uphill grade I don't think is going to be one of them.
As for taking space from vehicle lanes, I entirely agree, but sadly the engineers are utterly opposed to doing anything other than 3.35 meter lanes, and 3.65 meter curb face lanes. It's incredibly frustrating. But sadly that is the current situation.