highway component—An identifiable or measurable aspect of the state highway system including (for the purposes of these guidelines) specific pavement conditions.

level of service—The condition at which a component of the state highway system should be maintained under a given level of funding.

level of funding—The level of legislative appropriations required to substantially maintain the state highway system at a specific level of service, as established through the budgeting process. The three levels of funding are:

desirable (highest)
acceptable
tolerable (lowest)

substantially maintained level of service—The level of service met or exceeded by 75 percent of a given highway component.