 The conference committee bill allowed states to use up to $200 million of fiscal year 1975's $800 million urban highway appropriation to purchases mass transit buses.In fiscal year 1976, states could divert up to the entire $800 million urban highway appropriation to mass transit (which now included not only buses but also rolling stock as well as rail construction).The conferees also agreed to bar states from canceling sections of their planned interstates to use the money for mass transit.