The new signs

When out on a walk this afternoon I encountered this new sign:

The bridleway signs have been there for years, but the sign with the motorcycle and the car is new, installed in the last week. After doing a little research, I discovered that it means "no motor vehicles". I think the new sign is necessary because people have taken motorbikes and four-wheelers down the bridleway when it's supposed to be for walking and horses only; the motor vehicles a mess of the path, especially when the it's muddy. There was a sign st the other entrance to the bridleway, too.