In reply to Tall Clare:
i drive and ride down it three or four times a week, and have done for about fifteen years - tbh i'm not really sure what difference another couple of signs would make two weeks in advance - the people who drive like arses down it (seems to be mainly our local builders in my experience) will do so "because they can",i reckon the majority who are considerate will be considerate whether the signs go up two weeks ahead or two days.
It's also right at the end of the route so people will be well spread out - coming down Little Langdale (far narrower and much longer than Brackenley Lane) towards the end of the Fred with 2,000 entries people were in ones and twos, with a lot of space between them.
Although to be fair I think the signs they have put up are too small - they're fine on a bike but you can't read them from a car. So something on FB will probably help, so ta for that.
Btw - did you know a sportive went up there about a fortnight ago? No signs in advance, and no major issues as far as I saw.
Post edited at 23:03