52M - crossing the line

[Derek52]

Hi - In my case the 52m notice relates to a single sign and there is no restricted area. Cars can park or approach from either side, but if they cross the line it seems to be an offence. I thought 52m was to protect an area? No part of this particular road (Amesbury Avenue Croydon) is restricted. It seems they have created a fine line, and it is an offense to cross it. Is this proper use of the legislation, is it legal?

[des8]

Google earth isn't showing any restriction signs, but may be out of date.

Suggest you post on Pepipoo as they are the best for your query