Synopsis As Introduced Creates the Clean Transportation Standard Act. Establishes a clean transportation standard to reduce lifecycle carbon intensity of fuels for the ground transportation sector by specified amounts. Provides for related rulemaking and calculations. Provides that the clean transportation standard shall take the form of a credit marketplace monitored by the Environmental Protection Agency. Provides for verification and data privacy requirements for the Agency. Provides for penalties for failing to offset deficits in certain situations, and for penalties for submitting false information. Exempts airline, rail, ocean-going, and military fuel. Provides that the Agency must develop a periodic fuel supply forecast. Establishes findings. Defines terms. Contains other provisions. Effective immediately.