Get a sneak peek at whats next for Permanent Hazards on our April 7th Office Hours!

Post Reply

Best map editing practice (especially Railroads)

Post by porubcan
hello all,

I was trying to find more information regarding non-drivable segments (railroads in this case, but we may generalize the topic)

I think correct handling of non-drivable segments should be added to Best map editing practice

e.g. if (or when) create junctions when connecting/crossing, which direction settings are most appropriate, segment naming, etc.

thanks
porubcan
Waze Global Champs
Waze Global Champs
Posts: 6816
Answers: 1
Answers: 1
Has thanked: 632 times
Been thanked: 1856 times

POSTER_ID:4884994

1

Send a message
https://storage.googleapis.com/wazeoped ... 00k_6c.pnghttps://storage.googleapis.com/wazeoped ... onster.png
SK Country Coordinator, SK Country Manager, Global Champ, Waze Beta Tester

Post by AlanOfTheBerg
I made an update to the Turn Restrictions section to update images and add some verbiage about u-turns.
AlanOfTheBerg
EmeritusChamps
EmeritusChamps
Posts: 23627
Has thanked: 568 times
Been thanked: 3478 times
Send a message
Wiki Resources: Map Editing Manual | alanoftheberg@gmail.com
Oregon-based US Ex-Global Champ Editor | iPhone13Pro - VZ

Post by kentsmith9
I would say that routing will still work fine regardless if the junction is at the railroad crossing or not. Consider what the routing server will see without the junction. If trains crossed every 10 minutes for 5 minutes total, the segment it crossed (but did not join) would have an average speed of a much lower number than the segment one block away that had an underpass/overpass. It does not matter if the junction sits on the railroad or not to get the same routing time through that area.

Therefore you do not need to add complexity with junctions and turn restrictions at the point of a railroad crossing. If anything we might want to add the above explanation to help people understand why not to create the junction there.
kentsmith9
Waze Global Champs
Waze Global Champs
Posts: 5766
Has thanked: 816 times
Been thanked: 1156 times
Send a message

Post by kentsmith9
I went ahead and added content to http://www.waze.com/wiki/index.php/Road ... 9#Railroad per our discussion so far. If we decide to change our best practices recommendations we can do so.

I also created redirects to this same wiki entry for:
* Railroad
* Railroads
* Railroad crossing
* Railroad crossings

While these do link to the US Road Types page, I added a link back to the international list at the end of the Railroad instructions.
kentsmith9
Waze Global Champs
Waze Global Champs
Posts: 5766
Has thanked: 816 times
Been thanked: 1156 times
Send a message

Post by Kuhlkatz
You mean like this US section ?
I think it was meant to be handled individually by each country.
What should likely be clearly stated everywhere else is that it should NOT be connected to the current road grid at all.

The main question is, if it's not drivable, what's the use of setting turn restrictions ?
Would anyone riding in a train want instructions to turn left ? It's not likely that they would be routed on there by the routing engine in the first place.
Kuhlkatz
Waze Local Champs
Waze Local Champs
Posts: 917
Has thanked: 32 times
Been thanked: 146 times
Send a message
Carel Cornelius
AM : Centurion & Sandton, ZA
CM & Coordinator, South Africa
(HTC One, Android 5.0.2, v7.19.401.51)
[img]https:///DwNb3R[/img]
South African Wiki Waze Wiki Map Editing

Post by porubcan
I was wondering, if there is any general rule, it should be in general wiki section.

I personally see good reason to have railroads crossing with junction and I already started discussion about railroads in Editing Experts forum. within this discussion there is one point regarding the junction on railroad crossings (following is my own opinion, which was disregarded by other Experts):

when railroad and normal road are crossing, we should take this junction in count for routing (penalty) and for traffic analysis (if there is slow traffic before the crossing, it doesn't mean real jam, but just train passing by and traffic is going back to normal after short time period.

also there are different avg. speed values before and after crossing so it makes sense to have the junction dividing the road segments.

so I tried to find any relevant rules on wiki, but haven't.
porubcan
Waze Global Champs
Waze Global Champs
Posts: 6816
Answers: 1
Has thanked: 632 times
Been thanked: 1856 times
Send a message
https://storage.googleapis.com/wazeoped ... 00k_6c.pnghttps://storage.googleapis.com/wazeoped ... onster.png
SK Country Coordinator, SK Country Manager, Global Champ, Waze Beta Tester