Standard:

• J678

Reaffirmed:

• 1998-12-01

Revised:

• 1988-12-01

Revision:

• Historical. Access the latest revision: J678_201108

Issuing:

• Odometer And Speedometer Standards

Scope:

This SAE Recommended Practice applies to speedometers, odometers, and speedometer drives typical of passenger vehicles, buses, and trucks used for personal or commercial purposes. The method of determining wheel revolutions per unit distance and overall system design variation are applicable to passenger cars only. Comparable recommendations for trucks and buses are under development. The data of tachometers is applicable to vehicular use, as previously described, and also to stationary and marine engines and special vehicles.

History:

Standard	Published	Revision	Status
J678_201108	2011-08-05	Latest	Stabilized
J678_198812	1988-12-01	Historical	Reaffirmed
J678_198406	1984-06-01	Historical	Revised

AKA:

• SAE J 678

Sector:

• Automotive

Topic:

• Instrument panels
• Parts