warning lights

He added that once it had been announced it had "set off warning lights for business".

National Association of Head Teachers general secretary Paul Whiteman said the warning lights “are flashing red” - and without proper investment, “things will get even worse and the system may face complete collapse”.

My warning lights began to flash, prompting me to pull over.

And the warning lights have been flashing red for more than two years.

One of the alleged co-conspirators who was caught posted a video that evening of a police car blasting its warning lights, apparently as seen from the passenger-side rearview mirror of the car being pursued.