Definitions

Definitions. Definitions. In this chapter: (1) “ADT” means average daily traffic, calculated as the annual average number of vehicles traveling over a particular portion of highway within a 24-hour period. (2) “Bridge design load” means the maximum vehicle loading that a bridge is designed to accommodate without exceeding the allowable working capacity of any structural member or group or system of structural members. (3) “H-15” means the gross vehicle load imposed by a standard four-wheel truck weighing 15 tons including cargo. (4) “H-20” means the gross vehicle load imposed by a standard four-wheel truck weighing 20 tons including cargo.