Cycling in Waterloo Region

[danbrotherston]

Is a roll curb significantly better than a 0.6m painted buffer? The buffer would be flat but significantly wider. (Yes, a real curb would be the most effective.)

Yes, a roll curb is more effective, drivers are much more likely to avoid a curb, even a roll curb while traveling at speed, they won't bother to avoid paint. As for wider, I doubt it, most curbs are around 0.5 meters in width, the space consumed is probably going to be comparable.

The biggest problem, IMO about a roll curb is it doesn't prevent parking, which isn't as big an issue on that section of road.  That being said, it still makes sense to use a barrier curb where possible.