be on full beam

The economy may seem to be barely flickering in the west, but globally it is on full beam.

A group broke cover in front of him, but his headlights were on full beam and blinded them, protected him as he drove past.

They were on full beam.

The headlights were on full beam and bounced up and down on the garage doors set in the compound wall.

Forgetting to renew tax or insurance, and forgetting that lights are on full beam, and to some degree taking the more usual route by mistake, are unlike the others in that they appear to represent failures of prospective memory e.g. forgetting to do something.