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Best map editing practice

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In Practice: heading structure, section titles, and typos divided highways
== In Practice ==
=== Dividing and un-dividing divided highways ======= {{anchor|When (Not) to Split a Two-Way Road}}{{anchor|When to Split a Two-Way Road (and when not to)|When to divide a TwoWay Road (and when not to)}}When to divide a TwoWay Road two-way road (and when not to) ====
<!-- After this anchor is updated to the new term, update the glossary to link back here for the entry [[Glossary#Dual carriageway]] -->
Generally, a road should be undivided un-divided unless it meets any of the requirements for dividing a road. When initially reviewing whether to divide or "un-divide" (merge back together) a roadway, consider these points first:
# The default representation for any roadway is a single 2-way segment, even if the physical roadway is divided. Dividing a roadway carries with it the burden of proof that the change will improve the usability and/ or simplicity of the Waze map.
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Remember that dividing and undividing un-dividing roads each comes with its own set of problems. Each situation is unique and some issues may be more manageable with a single two-way road, and some may work fine with a divided road. Consider every aspect of routing, and carefully examine each junction before dividing or undividingun-dividing. Regardless of whether you're dividing or undividingun-dividing, remember that you might cause more problems than you solve and you might have to put it back the way it was before. Also remember that dividing and undividing un-dividing each cause loss of some traffic data, which can result in poor Waze routing.
=== {{anchor|How to "Un-Split" two One-Way Roads}}|How to "Un-divide" two One-Way Roads}}How to un-divide two one-way roads ===Unfortunately there is no easy way to merge two one-way roads back into a two-way road--which is why you should always give a lot of thought before dividng dividing a road in the first place. And then think some more.
When you come across a road in your area that has been divided but shouldn't have been, you have some major map surgery ahead of you. Because of this high complexity in this process, it is recommended NOT to merge the two one-way roads UNLESS there are Update Requests related to the road caused by it being divided.
{{Red|The process to undivide un-divide a road (convert from two one-way roads to one two-way road) written below has been specifically designed to preserve the underlying address information embedded in the street segments. It is very important that you do not simply delete one of the two roads because that deletes the house address data on that part of the road. They would have to be looked up and manually added back to the new road.}}
The steps below show how to properly merge two one-way roads and preserve the underlying house numbers.
This is our example road segment. For the entire length of the road you need to:
[[File:UndivideRd1un-divideRd1.jpg]]
1. Select the two segments to be merged and set them both to two-way.
[[File:UndivideRd2un-divideRd2.jpg]]
2. Disconnect both segments from one side of the section being undividedun-divided. It is best to disconnect alternate ends of each segment as shown.
[[File:UndivideRd3un-divideRd3.jpg]]
3. Bring the two disconnected ends together in the middle (and realign the roads as necessary). You can remove the junction point you just created by selecting it and using the Delete key.
[[File:UndivideRd4un-divideRd4.jpg]]
The following video was recorded by an editor merging two one-way roads so the addresses were preserved. This video follows the described steps above, but may help seeing it happening in real time. Press the "enlarge button in the lower right corner to see it full screen.
=== Junction Style Guide ===
When creating or editing a junction, it is very important to understand the nuances of how the Waze routing engine looks at the map segments and junctions. The [[Junction Style Guide]] provides the best practices with the many different types of junctions.
 
== New Roads ==