Time based turn restrictions

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Re: Time based turn restrictions

Postby harling » Mon Dec 10, 2012 10:51 pm

It has just been brought to my attention that the Best Practices document is still reversed, advocating that "the side of caution" is to allow the turn. In other words, it still reads that it is better for a Wazer driving in rush hour traffic to be directed to take a turn that is illegal, than to leave the turn restricted the rest of the day when it can be taken.

Around here, there are intersections where one driver trying to make such a turn (typically a left turn across oncoming traffic) will result in traffic pile-ups and possibly accidents, rendering this recommendation borderline suicidal. I thought we resolved that it should have been put back to the way it read earlier; i.e., that "the side of caution" was to restrict such a turn?
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Re: Time based turn restrictions

Postby harling » Fri Nov 02, 2012 5:27 pm

kentsmith9 wrote:There are now two questions in my mind:

1. Does the group generally agree with the philosophy of the statement that Waze should give the best route and let the user decide if it is legal?

2. Is the specific wording "to err on the side of caution is to sometimes recommend an illegal turn"?

I strongly disagree that to give illegal (and most likely unsafe) directions is to "err on the side of caution." Waze should only give directions that are guaranteed to be legal and safe. If a local driver knows a "short-cut" that Waze does not suggest, he can complain until Waze implements time-based restrictions; it's better than complaining that Waze cost him a $50 ticket, or a $5000 hospital bill.
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Re: Re: Time based turn restrictions

Postby HandofMadness » Sat Nov 03, 2012 7:42 am

chunkmonkey wrote:Well it seems this is a mixed bag on this issue. In this case I restricted the turn even though its allowed 21 hours a day. My reasoning being that it's one block off a HWY, and there is a safer 24hr left hand turn with a turn lane 2 blocks up.

My next question is, should I just mark this as solved any time UR error pops there saying this turn should be aloud? or what is the best way to handle this now?

Thanks in advance,
ChunkMonkey.

My experience is that won't happen very often, usually its just system generated errors. The most likely problem will be other editors seeing the system generated error and "fixing" the turn by enabling it.

In LA we put a small landmark over the junction with no name but fill in notes in the description field. It helps, but you still get a lot of new editors with the landmark layer off who turn it back on.

I've started locking segmemts after disallowing the turn.
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Re: Time based turn restrictions

Postby HandofMadness » Fri Nov 02, 2012 6:08 pm

therubinator wrote:So I think there's room for improvement. This approach is black-and-white whereas some amount of discretion could be used. jhfronz's example points out a short-term restriction which, in that case, perhaps makes sense. However, if a more nuanced approach were taken say, given certain conditions then it might avoid confusion (and also make Waze more useful, rather than less, in those situations). For instance, what if the recommendation were to allow the turn if the restriction were:

  • not during rush hour (defining rush hour being slightly fuzzy, but based on the area and the volume of traffic - assumes the editor knows the area well)
  • not more than 4 hours long (for example)
  • not cumulatively more than 12 hours of the day
  • not a turn on a single-lane road (just spitballing now)


I'm simplify it to the following:
- Disallow the turn if most drivers are likely to encounter the turn while it is restricted
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Re: Time based turn restrictions

Postby chunkmonkey » Sat Nov 03, 2012 3:16 pm

Excellent idea I will add a tiny one so its not a eye sore but at least adds a note as to why I did this, to other edits that are not in a mad rush for points and are actually trying to fix things for the sake of the maps guidance.

It would sure be nice if this was high on the list of Waze's upcoming features, time restricted turns, and HOV lanes, both of which Vancouver has tons of and those two features could make Waze a much more complete turn by turn navigation option. I would have put more of my time on those two items, than face book integration personally . But then again, they need users to make the system work and facebook is another way to get noticed. I also don't know how Waze internals work, turn by turn and HOV could be a complete redesign of there structure to make that happen, but it is needed to be a premium nav service.
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Re: Time based turn restrictions

Postby chunkmonkey » Sat Nov 03, 2012 7:03 am

Would be nice if you could leave a message with a solved (to explain how) or not identified (to get more info).
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Re: Time based turn restrictions

Postby chunkmonkey » Sat Nov 03, 2012 7:01 am

Well it seems this is a mixed bag on this issue. In this case I restricted the turn even though its allowed 21 hours a day. My reasoning being that it's one block off a HWY, and there is a safer 24hr left hand turn with a turn lane 2 blocks up.

My next question is, should I just mark this as solved any time UR error pops there saying this turn should be aloud? or what is the best way to handle this now?

Thanks in advance,
ChunkMonkey.
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Time based turn restrictions

Postby chunkmonkey » Sun Oct 28, 2012 4:31 am

I know Waze at this point can't handle time based turn restrictions, I have searched the wiki and didn't see a mention of the best way to handle these. I have seen a few user reported errors of Waze directing them through a non allowed turn. Yet this turn is allowed 21 of the 24 hour period in a day. Is it best to leave that turn allowed, and close the occasional error, or restrict it and force other all day routes?
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Re: Time based turn restrictions

Postby CBenson » Sat Feb 21, 2015 7:29 pm

The routing server will take into account the estimated time that you will reach the turn. Thus, when you input your destination at 3:45 pm the routing server will not route you through turn because it calculates you will reach the turn after 4 pm. No reroute is involved, the initial route will correctly avoid the turn.
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Re: Time based turn restrictions

Postby CBenson » Mon Dec 17, 2012 4:11 pm

therubinator wrote:
jasonh300 wrote:Personally, I think they should be all restricted so that Waze never tells someone to make an illegal turn.


FWIW, that would be my preference too.

I have been converted to agree with this. I agree because it is the most simple rule.

My previous position was that people should follow the signs (and commuters can ask for alternative routes) when waze routes though a time restricted turn. Waze provides more information to the user if it is routing through a time restricted turn rather than avoiding it. However, that information is only useful to the user if the user knows how the turn is set. Currently, the situation is too chaotic with different editors making different judgement calls. Thus, I now agree that all time restricted turns should be restricted.
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