STD
State transportation department (STD) means the State highway department, transportation department, or other State transportation agency or commission to which title 23 of the United States Code funds are apportioned.
Source
23 CFR § 710.105
Scoping language
Terms defined in 49 CFR part 24, and 23 CFR part 1 have the same meaning where used in this part, except as modified in this section.