As a cyclist and motorist, I find these green lanes confusing. We've known "green means go" since we were pre-school age. Will drivers assume it is OK to use the lane if turning right? Some lanes are painted solid green and others have stripes. What does this mean? I have received no notice; including information in the city weekly digest is necessary! I have not ridden my bike on one of these but the poster's comments are very concerning especially slippery paint and bumpy road.

I hear that the green paint is not actually slippery despite how it may look, but I would agree that ground out sections of roadway are too deep and unpleasant to ride over having ridden over similar sections of the William St. Bikeway. I know grinding out pavement keeps pavement markings from getting plowed up, but the final product needs to be smoother at least in the context of bicycles. I do appreciate more visible pavement markings for bicycles generally.

At least at this location it seems to be thermoplastic paint. That makes it much smoother than the pavement around it, and they seem to have applied it pretty thickly. I don't notice slippage when it's dry, but when it's wet it's noticeable. It's even worse when it's frosted, and the depressions they made collect water and then ice.

Thanks for bringing this up. I am also a cyclist and see this green paint all around now. Also have absolutely no idea what it is supposed to mean. Another stupid waste of money by the city for something that no one wanted. Just keep the white bike lines painted and enforce the traffic laws.

I bike this section every day on my way home from work. Since they ground out the lane I now move out of the bike when I get ti this part so I can avoid hitting those rumble strips. Honestly when I saw them doing it I thought oh that's great ! They are improving visibility and hopefully safety for cyclists. Then I tried riding on it. The surface is absolutely terrible to ride on - seriously just like staying on rumble strips. There is no way that is safer for me to be riding on so now I avoid the bike lane.

Green pigmentation on the pavement is used Nationally to identify, and highlight, bicycling facilities such as dedicated bike lanes. You can find many examples here: https://nacto.org/publication/urban-bikeway-design-guide/. The City uses the green pigmentation to highlight conflict areas.

The material currently being used by the City is a polymer cement surface called Endurablend. (See product website.) The material has a similar performance to MMA Acrylic based resin (see NACTO materials: https://nacto.org/publication/urban-bikeway-design-guide/bikeway-signing-marking/colored-pavement-material-guidance/) without the fumes.

The green surface is typically installed without recessing. The Arrowwood installation required recessing, which was installed in a manner consistent with the methods used in other locations for bike symbols, crosswalks, and the William Street cycletrack.

Your comments have been noted and recorded, but no changes are planned at this time.

Your request has been acknowledged and/or addressed to the best of staff's ability. A more detailed description of action taken by staff, if available, is provided in the comments above. Thank you for bringing this to our attention.

This is the manufacturer's website, specifically for bike lanes: https://pavementsurfacecoatings.com/bike-bus-lanes/. They state that the coating is supposed to be thin, 1/8", which you've overapplied in this case. They also state and show that you're supposed to add coarse aggregate to improve traction. Further, they recommend the treatment that was done on William street, with a hexagonal pattern, to make the friction high enough to be safe for cyclists.

The attached picture shows the manufacturer's recommended applications. In the bike lane symbol, the application is thin, as it's supposed to be, with lots of obvious coarse aggregate. The properly done green bike lane example, as was done on William, is the right side of the picture. Again the aggregate is very obvious. Has someone looked at the job that was done at the entrance to Arrowwood Hills?

That location was recessed much more deeply than the obviously recessed lane line directly adjacent to it. If you're doing that deep of grinding at all bike lane facilities, you're going to damage most of our bike lane network. The Endurablend was applied too thickly, and without both of the manufacturer-recommended high friction treatments. What is the point of this fixit system if the response is to not inspect the location, ignore the problems, pretend everything was applied per the MFR's recommendation when anyone can see it wasn't, and close the issue?

Thank you for your A2 Fix It request, #373141. Your request is important to us and will be prioritized and addressed based on the overall availability of city resources. Please note: If the nature of your request is urgent, such as water emergencies, please check http://www.a2gov.org/a2fixit for phone numbers to contact us. A2 Fix It is for non-urgent, non-emergency issues and is monitored during weekday business hours only. Your patience is appreciated.

The materials at both locations referenced were applied by the same contractor using the same methods. The work on Arrowwood was inspected by City staff.

The hexagonal pattern is recommended in large scale operations, especially in streetscapes, as it does not show the natural cracking that occurs in flexible pavements. The additional cost of the hexagonal pattern is not warranted in this type of application.

If the work was signed off by City Staff, I suppose this is the city's liability problem now, isn't it. Never mind. My job was to report the problem, and I did that. I made a copy for my records. You might consider that just north of that location, a development with more than 200 bike parking spaces is going in, with hundreds of well-educated young people slated to live there. Civil suits in situations like that can be significant. Feel free to close this.

I finally had a chance to take a picture of this. This has two pictures side-by-side. The picture on the left is one of the paint/resin applications at the bike lane in front of Arrowwood. The picture on the right is a sample from the manufacturer of the material's website, showing a well-done application. In the manufacturer's image, the aggregate added to the resin is quite prominent, and it's very difficult to find a single square inch of the picture that doesn't have friction improving material. That's important, because the contact patch of many bike tires isn't much bigger than a square inch. For the picture on the left, I've highlighted an oval with an approximately 12x8" section of the marking that was either applied so thickly that the aggregate was buried, or so little friction aggregate was used, that the surface has insufficient aggregate to provide sufficient friction for cyclists. It's quite easy to feel these spots as you're biking over these stripes - if the surface is at all damp (even a big of fog or light frost is sufficient), you can feel your tires slip slightly on those spots. Combined with the rumble-strip feeling created by the way these stripes were ground, this makes the bike lane feel unusable, as previously noted.