BDP Freeway Failures

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BDP Freeway Failures

Postby dude463 » Mon Apr 17, 2017 2:52 pm

In the Seattle area we are getting a rash of BDP failures. Typically it's routing off then right back on the freeway at the same exit. nidnarb and I have mentioned this to a few other SMs and they all want to look at the problem but nobody can come up with a solution.

In no particular order:

https://www.waze.com/editor/?env=usa&lo ... st=7349906
https://www.waze.com/editor/?env=usa&lo ... st=7343770
https://www.waze.com/editor/?env=usa&lo ... st=7335861
https://www.waze.com/editor/?env=usa&lo ... st=7325445

I have a bunch more URs to post, will do so in the comments shortly.
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Re: BDP Freeway Failures

Postby nidnarb » Mon Apr 17, 2017 3:07 pm

Last edited by nidnarb on Mon Apr 17, 2017 3:38 pm, edited 4 times in total.
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Re: BDP Freeway Failures

Postby dude463 » Mon Apr 17, 2017 3:09 pm

https://www.waze.com/en-US/editor/?env= ... st=7333507

This one uses all 4 leaves of a cloverleaf to continue straight on I-405. It's not needed at all. In heavy traffic it still wouldn't be more efficient.
https://www.waze.com/en-US/editor/?env= ... st=7333825
https://www.waze.com/en-US/editor/?env= ... st=7296618

I added a junction box to this one to prevent the problem. It has been a problem multiple times.
https://www.waze.com/en-US/editor/?env= ... st=7297007
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Re: BDP Freeway Failures

Postby dude463 » Tue Apr 18, 2017 5:35 am

And here's another in a totally different spot.
https://www.waze.com/editor/?env=usa&lo ... st=7350813
Last edited by dude463 on Fri Apr 21, 2017 5:47 am, edited 1 time in total.
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Re: BDP Freeway Failures

Postby dude463 » Wed Apr 19, 2017 3:41 pm

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Re: BDP Freeway Failures

Postby dude463 » Fri Apr 21, 2017 5:46 am

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Re: BDP Freeway Failures

Postby dude463 » Fri Apr 21, 2017 2:42 pm

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Re: BDP Freeway Failures

Postby Nagamasa » Fri Apr 21, 2017 11:00 pm

dude463 wrote:This one uses all 4 leaves of a cloverleaf to continue straight on I-405. It's not needed at all. In heavy traffic it still wouldn't be more efficient.
https://www.waze.com/en-US/editor/?env= ... st=7333825
https://www.waze.com/en-US/editor/?env= ... st=7296618


FYI, these two look like they were on the virtual C-D lanes, to get back to the mainline. Wouldn't be a good example for the other failures we're seeing. (It's possibly a failure of the virtual C-D design, not failure of BDP.)
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Same with one with at Ellingson Rd.

This one that route to West Valley Hwy isn't necessarily a failure--it's rush hour traffic where you could save time detouring off the freeway: https://www.waze.com/en-US/editor/?env= ... st=7340504

(Just trying to make things easier for devs)

--
Otherwise, the remainder are generally valid concerns. :(

Let me add one from California to the mix: https://www.waze.com/editor/?env=usa&lo ... st=7330258
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Re: BDP Freeway Failures

Postby dude463 » Tue Apr 25, 2017 11:55 pm

I'm not sure if any of that has anything to do with it. Detouring off the freeway and taking an alternate route is one thing, getting off just to get right back on is a good way to find some road rage. I'll just point out that nearly all of these scenarios have had recent "True Elevations" done to the freeway segments they are avoiding.

Here's another to add to the list, this one isn't in the Seattle area and is more rural. There was a single lane closure 2 miles up the road, but I'm not sure this off/on would do much.
https://www.waze.com/editor/?env=usa&lo ... st=7366031

Here's one more. No HOV, no "True Elevations". Just normal freeway off - on.
https://www.waze.com/editor/?env=usa&lo ... st=7364952

And another
https://www.waze.com/editor/?env=usa&lo ... st=7367998


https://www.waze.com/editor/?env=usa&lo ... st=7364952
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Re: BDP Freeway Failures

Postby Nagamasa » Wed Apr 26, 2017 2:11 am

dude463 wrote:I'm not sure if any of that has anything to do with it. Detouring off the freeway and taking an alternate route is one thing, getting off just to get right back on is a good way to find some road rage.


I'm not disagreeing with road rage, and I completely agree that I-405 @ 30th as well as the one in Woodland are suspicious.

However, the one on SR-167 shows exiting from the HOV/HOT lane, ramp off HOT, physical off-ramp, across the street, on-ramp, to mainline SR-167. Or in algorithm terms Freeway1-Ramp1-Ramp2-Ramp3-Freeway2, which is not a penalized detour.

Actually for virtual C-D and HOT off-ramps, may I suggest we add the alt name of the freeway (SR-167 S for example) on the ramp segment between the express lanes and the actual off-ramp, so that the alt name of that virtual ramp matches with the mainline, thereby penalizing the off-ramp on-ramp correctly.
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