What is another word for one at the wheel?
Pronunciation: [wˈɒn at ðə wˈiːl] (IPA) 
Being the one at the wheel refers to the person who is in control or driving a vehicle. There are several synonyms that can be used to describe this person. The first is the driver, which is the most common term used to refer to the person responsible for operating a vehicle. Other synonyms include the operator, the pilot, the navigator, and the captain. Each of these alternative terms emphasizes a slightly different aspect of the role, such as the ability to navigate, the responsibility for the safety of passengers, or the expertise required to handle complex machinery. Regardless of the term used, being the one at the wheel implies a significant level of responsibility and control.
