Question

Identify the italicized part of the sentence.

Using a radar device, the Department of Public Safety can determine the speed of automobiles on the freeway.

subject
predicate
direct object
indirect object
predicate noun
predicate adjective

Answer 1

I will take a wild guess here and say that the italicized part of the sentence is the word 'determine', in that case, it would be a predicate (the part of a sentence that expresses what is said about the subject -- verbs can be called predicates even if they stand alone).

Answer 2

Thanks @kanra