'Abreast' describes when vehicles or ships are positioned next to each other, moving together or close in lines. It shows parallel and near sides of objects or vehicles.
The boats sailed abreast on the river.
Two cars drove abreast on the road.
This use means a person or group is well informed and follows new developments or trends in a specific field. It relates to staying current and knowledgeable.
They are abreast on new technology trends.
She is abreast of medical research today.
Used rarely as a verb meaning to keep yourself informed or updated about something. This form is not common but appears in some formal or old writings.
We abreast ourselves with market changes.
He tries to abreast regularly on news.
