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Highway Avoidance Ignored
Posted: Mon Jul 28, 2025 4:34 pm
by smfollen
Recently, while trying to figure out a strange Closest Entry Point behavior, I realized that my XT2 was ignoring my avoid highway setting.
To verify that, I created a simple 2 via point route using the XT2's Route Planner. The route could be navigated by highway or by parallel local roads. The XT2 routes over the highway even when set to avoid highways.

- Config.png (83.82 KiB) Viewed 200 times
Note that Rt. 6 is a highway (and Basecamp treats it as a highway, using the same map)

- Planned.png (556.78 KiB) Viewed 200 times
If I edit the route on the XT2, shorter and adventure versions of the route make sense.

- Shorter.png (580.87 KiB) Viewed 200 times

- Adventure.png (591.03 KiB) Viewed 200 times
The "faster" route would make sense, IF highways were allowed.
Again, they are set as not allowed, but the XT2 takes the highway anyway.

- Faster.png (577 KiB) Viewed 200 times
Is anyone else experiencing this?
Re: Highway Avoidance Ignored
Posted: Mon Jul 28, 2025 9:29 pm
by Peobody
This makes me wonder what the definition of "Highway" is. An interesting test would be from a point on 105 just west of Marys Point Rd to a point on Main St in Wareham. I wonder if it would route you on I-195, Hwy 6, or Marys Point Rd.
Edit: To finish this thought, if it does not route you on i-195 then I think it is safe to assume that is avoiding highways, and doesn't consider Hwy 6 a "Highway".
Re: Highway Avoidance Ignored
Posted: Mon Jul 28, 2025 10:29 pm
by smfollen
@Peobody Definition of a highway is a good point.
Rt. 6 is US Route 6 which runs from Massachusetts to California. In the area with my example, It is a divided multi-lane road with limited access - the typical on and off ramps. I consider it a highway, but the XT2 doesn't care about my opinion of course
When I did the same test in Basecamp, it did consider Rt 6 to be a highway. Perhaps Basecamp and the XT2 have different definitions of highway?
That would be disappointing, but certainly possible.
I did do a similar test on the XT2 with local roads parallel to Interstate 495. In that case, the XT2 did behave as I would expect in terms of avoiding or allowing highways. Both Basecamp and the XT2 avoided the Interstate when set to avoid highways but took the interstate when highways were allowed.
For your specific suggestion, Rt 6 is not a highway in that area, but Basecamp takes Interstate 195 when highway is allowed and Mary's Pond Rd when highway is not allowed. I'll have to try some more tests with state and US highways that are not Interstates.
Sometimes I feel like I'm doing more testing than real riding
You make me curious, since your profile says North Carolina - Are you familiar with the Wareham area?
Re: Highway Avoidance Ignored
Posted: Tue Jul 29, 2025 12:47 am
by Peobody
smfollen wrote: Mon Jul 28, 2025 10:29 pm
You make me curious, since your profile says North Carolina - Are you familiar with the Wareham area?
I'm a Connecticut boy and have family sprinkled around the eastern part of the state. The Cape was a vacation destination. In my late teens, a friend and I spent a week at his folks vacation place near Wellfleet, scuba diving on both sides with fresh water rinse dives at the end of each day. That was over 5 decades ago. I moved around a good bit while in my twenties finally settling in North Carolina forty years ago. I try to get up there a couple of times a year, most recently in June. We, (me, wife, brother, his lady friend) spent time north of Boston being tourists; just along the coast as much as possible, seeking out lobster, steamers, half-shell oysters and little necks, and cold beer. I can find all of those things down here but it isn't the same.
Re: Highway Avoidance Ignored
Posted: Tue Jul 29, 2025 5:50 am
by Oop North John
smfollen wrote: Mon Jul 28, 2025 10:29 pm
When I did the same test in Basecamp, it did consider Rt 6 to be a highway. Perhaps Basecamp and the XT2 have different definitions of highway?
That would be disappointing, but certainly possible.
I did do a similar test on the XT2 with local roads parallel to Interstate 495. In that case, the XT2 did behave as I would expect in terms of avoiding or allowing highways. Both Basecamp and the XT2 avoided the Interstate when set to avoid highways but took the interstate when highways were allowed.
Maybe the "faster" roads algorithm effectively ignores the "avoid highways" as it considers it a faster road?
Hopefully you can understand what I'm trying to say about the problematic (putting it politely) XT" etc routing algorithms which Basecamp doesn't suffer from/