Personally I wouldn't. The
ABS is completely disabled if it is that. Some people say the brakes still work like cars without
ABS, but the foundation brakes won't have brake force limitation for the rears and you may lock the back too easily.
I asked if it were a Vauxhall because I've heard stories of water tracking up the earth wire for the
ABS and causing problems. They are only things I've heard mind, doesn't mean they are true.
EDIT:
The STOP warning lamp is on, so the car is telling you not to drive, too.