I believe following is what has been agreed to in the last few days of posts:
Any restricted segments will be done by using partial restrictions - vehicle types, by ticking all vehicle types except the two HOV entries. This has the effect of banning "private cars" from routing there, and all routes are considered private cars today, so this replaces the historical use of PLR for such purposes.
Any HOV that does get mapped will use restrictions only on the entrance segments. Note that in the historical PLR HOVs, once on the road there was no penalty to stay on it, whereas with partial restrictions, there appear to be complications even when already on the road, hence entrance-only. While not urgent to convert PLR-based HOV to the new style, when they are converted, the road type will be changed, but restrictions will not be added to those HOV segments, only to the entrances to the HOV.
For lanes that are HOV only during certain hours, we will use segment time restrictions on the entrances in combination with the private vehicle restriction. (I.e., one single entry for the restriction table combining the time period when HOV is in effect with the private vehicle restriction) -- obviously, multiple similar entries if there is more than one HOV period.
For reversible lanes, we will also use time restrictions. (Suggestion: in this case, we should also set the time-only restrictions on the HOV segments, with no vehicle type restrictions.)
--- END OF CONSENSUS ---
--- SUMMARY OF REMAINING OPEN ITEM IN DISCUSSION ---
Exits have been discussed, but there's no consensus to add them. They do create a double penalty (enter/exit), which might be "safer" (double penalty) and also might allow gaming the system for drivers who might use the HOV close to the start of a restricted period. However, there are risks involved, such as a single incorrectly set restriction causing funneling of all HOV lane drivers drivers through a single HOV exit that Waze sees as allowed, instead of sending each driver to the most appropriate exit for his or her route.
(My take: we already are going to rely on drivers using their judgement to override Waze and enter the HOV, we don't need to nanny the drivers for illegal behavior that they themselves should be aware of. However, this might have an impact if the HOV has very long stretches between exits or is very unique compared to non-HOV options. A driver may not realize that by taking HOV, he is leading himself into a bad exit guidance situation in those scenarios.)
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I have tried to make this as accurate a summary of the previous discussion as I could, with the exception of the two parentheticals where I added my own editorial take. Please let me know fi I got this right.
Any restricted segments will be done by using partial restrictions - vehicle types, by ticking all vehicle types except the two HOV entries. This has the effect of banning "private cars" from routing there, and all routes are considered private cars today, so this replaces the historical use of PLR for such purposes.
Any HOV that does get mapped will use restrictions only on the entrance segments. Note that in the historical PLR HOVs, once on the road there was no penalty to stay on it, whereas with partial restrictions, there appear to be complications even when already on the road, hence entrance-only. While not urgent to convert PLR-based HOV to the new style, when they are converted, the road type will be changed, but restrictions will not be added to those HOV segments, only to the entrances to the HOV.
For lanes that are HOV only during certain hours, we will use segment time restrictions on the entrances in combination with the private vehicle restriction. (I.e., one single entry for the restriction table combining the time period when HOV is in effect with the private vehicle restriction) -- obviously, multiple similar entries if there is more than one HOV period.
For reversible lanes, we will also use time restrictions. (Suggestion: in this case, we should also set the time-only restrictions on the HOV segments, with no vehicle type restrictions.)
--- END OF CONSENSUS ---
--- SUMMARY OF REMAINING OPEN ITEM IN DISCUSSION ---
Exits have been discussed, but there's no consensus to add them. They do create a double penalty (enter/exit), which might be "safer" (double penalty) and also might allow gaming the system for drivers who might use the HOV close to the start of a restricted period. However, there are risks involved, such as a single incorrectly set restriction causing funneling of all HOV lane drivers drivers through a single HOV exit that Waze sees as allowed, instead of sending each driver to the most appropriate exit for his or her route.
(My take: we already are going to rely on drivers using their judgement to override Waze and enter the HOV, we don't need to nanny the drivers for illegal behavior that they themselves should be aware of. However, this might have an impact if the HOV has very long stretches between exits or is very unique compared to non-HOV options. A driver may not realize that by taking HOV, he is leading himself into a bad exit guidance situation in those scenarios.)
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I have tried to make this as accurate a summary of the previous discussion as I could, with the exception of the two parentheticals where I added my own editorial take. Please let me know fi I got this right.
Re: [Update] Partial restrictions (time and vehicle type)