This SAE Recommended Practice provides definitions of common terms used in SAE Documents pertaining to motor vehicle lighting. It covers not only basic lighting terms but also terms which identify major segments of technical reports.
Rationale:ECE references addedDefinition added, 3.1.5The following definitions were modified for the intent of
consistency between standards and to improve the clarity and
accuracy of the definitions with brevity:3.1.9 LED - definition revised to ANSI standard3.1.10 Average Rated Lab Life - definition revised3.2.1 Adaptive Forward Light System (AFS) - revised to be
consistent with J25913.2.7 Full AFS added3.2.9 "Aimable" changed to "Aimed"3.2.10 Lamp Size - definition added3.2.13 Warning Light added3.4.1 Stop Signal Function - definition revised3.4.2 Stop Lamp - "lamp" added and definition
revised3.4.3 Turn Signal Lamp - "lamp" added and the text
inserted "or change direction" added to the definition to
be consistent with J588.3.4.4 Center High Mounted Stop Lamp (CHMSL) - "The CHMSL Is
intended to provide a signal to the both the operator of the
following vehicle as well as through intervening vehicles" was
added to be consistent with J1957.3.4.5 Backup Lamp - "Lamp" and "(reversing)"
added to be consistent with J593; ECE reference added3.6.1 Parking Lamp (Front Position) - definition completely
revised to be consistent with J222; the word "burning"
replaced with "operating" to include the use of LEDs.3.6.2 Tail Lamp (Rear Position) - the word "burning"
replaced with "operating" to cover LED sources.3.6.3 Sidemarker Lamp - definition revised3.6.4 Clearance Lamp - definition changed to agree with
J20423.6.7 Rear Fog/Tail - reference to SAE J585 added to be
consistent with J13193.6.8 Daytime Running Light (DRL) - definition revised to agree
with J20873.7.1 Rear Facing Cargo Lamp - Definition revised to agree with
J14243.7.2 Side Facing Cargo Lamp - Definition revised to agree with
J14243.7.3 License Plate Lamp - "plate" added3.7.4 Puddle Lamp definition added3.8.2 Headlamp - "an upper and /or lower beam "changed
to "a high and /or a low beam" to be consistent with
J13833.9.1 Auxiliary High Beam - Definition revised; J582 requires
revision to allow only the use of the term "high beam"
and not be interchanged with "upper and
"driving".3.9.2 Front Cornering Lamp - Definition revised requiring
changes to J8523.9.3 Front Fog Lamp - Definition revised to agree with
J583.3.9.4 Rear Cornering Lamp - "lamp" added
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