Some Speed Cameras Not Showing Up - Data Error / Mapshare Improvements
I've worked out what the problem is without their help, by looking at the properties of their existing locations on mapshare (web version): they are marked for the wrong direction of traffic flow... which I have reported and await consequent update.
The issue is: how many others are there, which I don't drive past on a regular basis, also incorrectly marked and therefore not being alerted? That's the problem with crowd-sourcing: there are many naive users/reporters who wouldn't realise something like the direction tag is important.
Clearly this is an example of a systematic data error, which needs to be addressed.
I will raise a separate post about Mapshare.