might help correct t negative external 5-5. A nation's government has determined that mass transit. such as bus lines, helps alleviate traffic con- gestion, thereby benefiting both individual auto commuters and companies that desire to move prod fully ucte and factors of production speedily along streets and highways. Nevertheless, even though several private bus lines are in service. the country's com xplain muters are failing to take into account the positive ted in externality associated with the use of mass transit a. Discuss, in the context of demand-supply analy sis, the essential implications of commuters) fail ure to take into account the positive externality COST associated with bus ridership