Home › CFR › Title 49 › Part 53849 CFR Part 538 — Manufacturing Incentives for Alternative Fuel Vehicles§ 538.1— Scope.§ 538.2— Purpose.§ 538.3— Applicability.§ 538.4— Definitions.§ 538.5— Minimum driving range.§ 538.6— Measurement of driving range.§ 538.7— Petitions for reduction of minimum driving range.§ 538.8— Gallon Equivalents for Gaseous Fuels.§ 538.9— Dual fuel vehicle incentive.