Service class group

Service class group means a group of engine and vehicle averaging sets defined as follows:
(1) Spark-ignition engines, light heavy-duty compression-ignition engines, light heavy-duty vocational vehicles and heavy-duty pickup trucks and vans.
(2) Medium heavy-duty compression-ignition engines and medium heavy-duty vocational vehicles and tractors.
(3) Heavy heavy-duty compression-ignition engines and heavy heavy-duty vocational vehicles and tractors.

Source

49 CFR § 535.4


Scoping language

None
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