運転している

is driving

→ 運転
phrase Uncommon #12,727
is driving The progressive form of 運転する, meaning someone is currently driving or is in the state of driving. It can also describe what someone was driving at a particular time, depending on context.
JA: 今、父が車を運転している。
EN: My father is driving the car now.

運転している時は道路に集中すべきだ

When driving, you should focus on the road.

彼が運転している車は彼のではありません

The car he is driving doesn't belong to him.

彼は何時間も運転している

He has been driving for hours.

あなたが新車を運転しているのを見た

I saw you driving a new car.