A9 average speed cameras
Discussion
I was in Bristol over the weekend, so experienced the A9 with these cameras twice over the Dunblane-Inverness stretch. A number of things come to mind. First off, given that the cameras are supposed to act as a 'deterrent' to speeding, why do they have multiple signs informing everyone that they're not active yet? Secondly, the spacing seems fairly random, some are within a couple of miles of one another, others are much further apart. Many have lengths of dual-carriageway between them but are not immediately either side, i.e., significant lengths of both. How do you keep track of your average speed when you've been in a tailback for ages? Do you just go for it when the road opens up?
A couple of the above reflect my lack of understanding of how they work. Is your average speed just measured between pairs or can it be between any pair (thinking of dual-carriageway and open road scenarios again)? Will this mean that the overtaking lanes will be become useless as no-one will want to go much above 60?
It's fairly difficult to average over 60 for a huge length of the road due to traffic but for shorter stretches, surely most cars do?
Thinking it may be a good idea for an app that tracks your speed between each and all of the cameras?
A couple of the above reflect my lack of understanding of how they work. Is your average speed just measured between pairs or can it be between any pair (thinking of dual-carriageway and open road scenarios again)? Will this mean that the overtaking lanes will be become useless as no-one will want to go much above 60?
It's fairly difficult to average over 60 for a huge length of the road due to traffic but for shorter stretches, surely most cars do?
Thinking it may be a good idea for an app that tracks your speed between each and all of the cameras?
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