From Wazeopedia
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When Waze gives navigation instructions to "turn", "exit", or "keep" onto an unnamed segment, it will look ahead on the recommended route for a road name that it can use. If there is a named segment {{u|further along your the recommended route}}, it will use (inherit) that name in the instruction. ''Named segments connected to the unnamed segment which are not part of your provided route, are not relevant.''
The inherited name is only used in the displayed and spoken instruction prompts, it does not affect the actual name of the segment. Unnamed segments are often used to control instructions on feeder ramps and at grade connectors (AGCs). Please be sure to understand all the ways in which unnamed segments can affect navigation instructions before adding names to unnamed segments or removing them from named segments.
This '''This always works ''' for {{Freeway|Freeways}} and {{Ramp|Ramps}}.'''
This '''never''' works for {{Parking Lot Road|Parking Lot Roads}} or {{Private Road|Private Roads}}, {{As of|January 2015October 2018}}, on  On all other road types (any road type which is '''not''' a Freeway , Ramp, Parking Lot Road, or RampPrivate 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}}, or {{Major Highway|Major Highway}} 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.  {{#ifeq:Names are never inherited through unnamed {{FULLPAGENAMEParking Lot Road}}|{{DraftLink|Navigation instructions for unnamed segments/Expanded}}||:''For a more detailed explanation, including side effects and usage examples, please see the [[or {{DraftLink|Navigation_instructions_for_unnamed_segments/ExpandedPrivate Road}}|Expanded Navigation instructions for unnamed segments]] page.''}}
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