RSA 238: -- Provides that the Highway Safety Agency is "the agency responsible under the executive direction of the governor to develop and implement the state's Highway Safety Program." RSA 238:6 further states that each state agency and each political subdivision (towns, village districts, school districts, cities and counties) "which implements highway safety programs approved by the Governor in accordance with the Highway Safety Act is eligible for reimbursement of federal funds apportioned to this state for such programs."

Public Law 89 - 564: -- requires each state to have a Highway Safety Program approved by the U.S. Secretary of Transportation.