From Wazeopedia

User:Subs5/PLR inheritence 2

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proposed changes
When a user is routed through an unnamed segment, Waze will automatically use the name of the next named segment on the route ''(a.k.a. road name inheritance)''. This is useful for getting instructions for ramps and turn lanes. However, this can be confusing in if there are several unnamed road segments (other areasthan {{Parking Lot Road|Parking Lot Roads}}), like large parking lots without road names. The user would get several turn left/right commands to the same road prior to reaching the first named road.
Be sure to understand how unnamed segments operate during navigation before adding names to unnamed segments already on the map.
The inherited name is only used in the displayed and spoken instruction prompts, it does not affect the actual name of the segment.
This '''This always works ''' for {{Freeway|Freeways}} and {{Ramp|Ramps}}.'''
This '''never''' works for {{Parking Lot Road|Parking Lot Roads}} {{As of|January 2015October 2018}}, on all other road types (any road type which is '''not''' a Freeway , Ramp, or RampParking Lot Road), this feature only works if:
# The combined length of the consecutive unnamed segments is shorter than 400 meters (1,312 feet), <br />'''AND'''
# There are 3 or fewer unnamed segments in a row.
To explain the above conditions from another perspectiveother perspectives:# If the consecutive unnamed {{Street|Local Street}}, {{Primary Street|Primary Street}}, {{Minor Highway|Minor Highway}}, {{Major Highway|Major Highway}}, or {{Private Road|Private Road}} segments measured together are longer than 400 m (1,312 ft), or if there are 4 or more unnamed segments in a row, Waze will '''NOTnot''' show or speak a name in the instructions.# There is never name inheritence for unnamed {{Parking Lot Road|Parking Lot Road}} segments.
=== Connecting street between the lanes of a divided highway ===
:[[File:InheritanceDividedHighway.JPG|thumb|right]]If routing from segment A (US-202 N) over the unnamed segment, Waze will use (inherit) the name of the next segment B in the instruction: "Go left to Beta Blvd" If routing from segment C (US-202 S) over the unnamed segment, Waze will use (inherit) the name of the next segment D in the instruction "Go left to Delaney Dr".
=== Parking lot with unnamed roads ===
:[[file:InheritedName2segments.jpg|thumb|right]]If the route leads from unnamed parking lot roads to a named road outside the parking lot, Waze might use the road name in instructions for turns INSIDE the parking. This is confusing for drivers. It is a '''known side effect''', and drawback of the feature. For example, coming from segment A, if the next turn is a left to segment 1, and than right to segment 2 (Main Street), Waze will give the instruction to turn left at segment 1 onto Main Street, while still in the middle of the parking lot road.