False Alarms from Other Cyclists

I'm experiencing the same thing. I've opened a ticket with Garmin and sent them copies of both my RTL510 & Edge 1030's file systems (minus the map data) for analysis.

I have not had this issue but would like the option to turn it on and off on my Edge 520 - why riding on a biking/walking trail, it would be nice to know when another cyclist is approaching me from behind so I can either get over to the right or push harder to stay ahead. :p Would need a visual (and audible if possible) differentiation for a car versus a bike though.

After receiving no response to my e-mails, I called Garmin 2 weeks ago and they confirmed having opened a ticket with others having the same problem. They said they would either come out with a software update or replace the units having this problem. Are others reading this having false alarms from other cyclists? If so, please contact Garmin and hopefully they will push a solution out faster than not. Thanks!

Unless they've changed the hardware since initial release, I don't see how replacing the units will help.

I always resist replacing hardware unless there is a clear problem. I would rather help diagnose the problem until a suspected issue is identified (hardware or software).

Best thing to do in order to avoid warnings from other cyclists is to only ride on motorways that ban cyclists.

I have the same issue. It started after the upgrade to firmware 3.3, this is the reason why I'd like to come back to 3.2

I rode this morning. I had the issue although it responded to riders inconsistently

i am am on version 3.2 and recalling reading some posts on this a couple weeks ago. One poster said they preferred it. For now I could do without. Would be nice if you could configure as you want

Have been using the replacement now for several weeks and still having false alarms from cyclists. Why is Garmin stalling about issuing a software/firmware update to solve this issue, given the obvious problem?

Spending a lot of time on cycle path I must plea for keeping this behaviour of the 510 as is. With the emerge of quiet and fast e-bikes the cycle path are becoming more and more dangerous. I am happy that my 510 tells me about each cyclist 10 km/h faster than me approaching from behind. Please Garmin, do not change this. Thank you.

vmojzisek, approaching cyclists from the rear, especially on cycling paths, are able to (and most do, in my experience) verbally warn (or ring a bell) to warn you of their approach. Not sure why you need radar in that case. If you're on the road/street, cars and trucks may blow their horn, but that's frowned upon in the U.S. and other European countries and they are much wider/larger and go much faster than bikes - that's why the rear radar light should detect only cars/trucks.
As I noted before, the previous version did not, for the most part detect bikes coming from the rear - that's why, when the 510 came out with a brighter rear light and longer battery life, I decided to upgrade. There was no notice by Garmin on the new model about any difference in detecting bikes. As far as I know, there were no complaints on the previous model NOT detecting bikes - why not have the same performance on the 510?