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Interpretation ID: aiam1523

Mr. Charles R. Taylor, Taylor Farm Service, 'The Farm Center', Tremonton, UT 84337; Mr. Charles R. Taylor
Taylor Farm Service
'The Farm Center'
Tremonton
UT 84337;

Dear Mr. Taylor: This responds to your May 15, 1974, question whether Standard No. 121 *Air brake systems*, mandates the use of air brakes on 1-ton and larger trucks.; Standard No. 121 only applies to vehicles equipped with air brak systems. This means that the manufacturer is free to equip his products with whatever brake system he choses, (sic) but that if he choses (sic) an air brake system, it must comply with the Federal safety standard.; Yours truly, Richard B. dyson, Assistant Chief Counsel