23 CFR 630.1006: Work zone safety and mobility policy.

(a) Each State shall implement a policy for the systematic consideration and management of work zone impacts on all Federal-aid highway projects. This policy shall address work zone impacts throughout the various stages of the project development and implementation process. This policy may take the form of processes, procedures, or guidance, and may vary based on the characteristics and expected work zone impacts of individual projects or classes of projects.

(b) At a minimum, the policy shall identify safety and mobility performance measures that will be used to manage work zone performance. Examples of such performance measures include number of fatal and injury crashes occurring in a work zone, percent of projects that exceed a preestablished crash rate in the work zone, number of highway worker fatalities and injuries experienced, highway worker fatality and injury rate per hours worked, percent of projects that experience queues above a predefined threshold, and percent of time when speeds in a work zone drop below a predefined threshold.

(c) The States should institute this policy using a multi-disciplinary team and in cooperation with the Federal Highway Administration (FHWA). The States are encouraged to implement this policy for non-Federal-aid projects as well.