FMVSS 104

Standard No. 104; Windshield wiping and washing systems

Issuing bodyNHTSA
CommitteesUS DOT / National Highway Traffic Safety Administration (NHTSA)
First issued1968
Statusactive
Categoryfederal
Topicshazard_perception, useful_field_of_view
Referencehttps://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.104

Scope

Specifies requirements for windshield wiping and washing systems, including minimum wiped areas (Areas A, B, C) of the windshield and minimum wipe frequencies, for passenger cars, multipurpose passenger vehicles, trucks, and buses, so the operator can see sufficiently through the windshield. The required wiped/cleared area defines the driver's usable forward field of view in rain/spray.

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