761—40.2 (321) Definitions.
“Department” means the Iowa department of transportation.
“Highway” means any segment of the primary road system or a municipal extension and includes but is not limited to the pavement surface, shoulder, median, earth fill, ditches and vegetation.
“Highway structure” means all the appurtenances of a highway including but not limited to guardrails, culverts, bridges, signs, light poles, attenuators, traffic control devices, or buildings at rest areas, information sites, commercial vehicle inspection and enforcement sites, or other appurtenances adjacent to the highway.
“Labor additive” means the labor additive rate approved annually by the Federal Highway Administration. This rate includes indirect labor costs, such as sick leave, vacation, holidays, other leaves with pay and departmental training. The labor additive rate produces an accurate charge for labor costs.
“Traffic control” means the labor, materials and equipment used to control traffic through or around the site of an accident on or adjacent to the highway, including but not limited to signs, barricades, signals, pavement markings, and lighting, channelizing, or hand signaling devices.