A9 average speed cameras

A9 average speed cameras

Author
Discussion

bananachips

243 posts

146 months

Tuesday 23rd August 2016
quotequote all
I'm not sure if this has been brought up, but how come lorries and other towing vehicles are going above 50mph on the single carriageway while I'm sitting at 50mph with my trailer like a prize plum?

s2kjock

1,677 posts

146 months

Tuesday 23rd August 2016
quotequote all
More accurate speedos, making use of whatever they think the threshold is over the actual limit before you get a letter in the post I assume.

simoid

19,772 posts

157 months

Tuesday 23rd August 2016
quotequote all
Aye - lorry limiter c. 56mph. Threshold for prosecution (in theory) 57mph.

50mph on your speedo likely 46-49mph actual. Speed up! biggrin

GoneAnon

1,703 posts

151 months

Tuesday 23rd August 2016
quotequote all
Look at the positioning of the cameras. They always seem to be in the start/finish area of single carriageway zones suggesting to me that they don't monitor the dual carriageway sections.

The Hootsman agrees but I haven't tested the theory!
http://www.scotsman.com/news/transport/more-driver...

Halmyre

11,148 posts

138 months

Tuesday 23rd August 2016
quotequote all
GoneAnon said:
Look at the positioning of the cameras. They always seem to be in the start/finish area of single carriageway zones suggesting to me that they don't monitor the dual carriageway sections.

The Hootsman agrees but I haven't tested the theory!
http://www.scotsman.com/news/transport/more-driver...
I haven't been done yet for tanking on (in a safe and considerate manner) through the dual-carriageway sections north of Perth. But the A9 between Dunblane and Perth *is* covered, and is all the more dangerous for it, as people spend more time looking at their speedometers than looking at their surroundings.

jshell

11,006 posts

204 months

Wednesday 24th August 2016
quotequote all
Halmyre said:
GoneAnon said:
Look at the positioning of the cameras. They always seem to be in the start/finish area of single carriageway zones suggesting to me that they don't monitor the dual carriageway sections.

The Hootsman agrees but I haven't tested the theory!
http://www.scotsman.com/news/transport/more-driver...
I haven't been done yet for tanking on (in a safe and considerate manner) through the dual-carriageway sections north of Perth. But the A9 between Dunblane and Perth *is* covered, and is all the more dangerous for it, as people spend more time looking at their speedometers than looking at their surroundings.
Catch up! Even the official A9 speed camera website states that they don't cover the dual carriageway sections!

Halmyre

11,148 posts

138 months

Wednesday 24th August 2016
quotequote all
jshell said:
Halmyre said:
GoneAnon said:
Look at the positioning of the cameras. They always seem to be in the start/finish area of single carriageway zones suggesting to me that they don't monitor the dual carriageway sections.

The Hootsman agrees but I haven't tested the theory!
http://www.scotsman.com/news/transport/more-driver...
I haven't been done yet for tanking on (in a safe and considerate manner) through the dual-carriageway sections north of Perth. But the A9 between Dunblane and Perth *is* covered, and is all the more dangerous for it, as people spend more time looking at their speedometers than looking at their surroundings.
Catch up! Even the official A9 speed camera website states that they don't cover the dual carriageway sections!
There are definitely average speed cameras on the Perth to Dunblane dual-carriageway section. It's the sections of DC north of Perth don't have any.


jshell

11,006 posts

204 months

Wednesday 24th August 2016
quotequote all
Halmyre said:
jshell said:
Halmyre said:
GoneAnon said:
Look at the positioning of the cameras. They always seem to be in the start/finish area of single carriageway zones suggesting to me that they don't monitor the dual carriageway sections.

The Hootsman agrees but I haven't tested the theory!
http://www.scotsman.com/news/transport/more-driver...
I haven't been done yet for tanking on (in a safe and considerate manner) through the dual-carriageway sections north of Perth. But the A9 between Dunblane and Perth *is* covered, and is all the more dangerous for it, as people spend more time looking at their speedometers than looking at their surroundings.
Catch up! Even the official A9 speed camera website states that they don't cover the dual carriageway sections!
There are definitely average speed cameras on the Perth to Dunblane dual-carriageway section. It's the sections of DC north of Perth don't have any.
Sorry, meant North of Perth!

XMT

3,779 posts

146 months

Wednesday 24th August 2016
quotequote all
I had the pleasure of travelling down these roads on saturday and Tuesday. Seriously people are so stupid its unreal.
THe same people who do 35/40 normally start doing 95 in the dual carraige way sections, they treat the average speed camera like the instant speed camera and slam on their brakes when they see one. What part of AVERAGE speed cameras do they not understand!

Its like smacking your head on a brick wall. The first time I travelled up on saturday, I overtook twice and VERY quickly realized it was a total waste of it - sat at 40 near enough the whole way behind other people doing the same.

It was killing me slowly inside.


XMT

3,779 posts

146 months

Wednesday 24th August 2016
quotequote all
caelite said:
s2kjock said:
cailete said:
Ive done it on my motorbike before and NEVER AGAIN. If I need to take the bike up to Perth again Im taking the plates off and risking getting caught by actual traffic enforcement. Bike riding in blind spots without the ability to maintain a delta speed of 5-10mph is terrifying. Also the stereotypical accuracy of bike speedos as well as the ease to push it over 70. The speedo on myGPZ bounces by about 10mph at 70 so I normally only have a vague idea of how fast im going. Which is fine with physical enforcement or gatso where I can slow down for a few seconds but average speed cameras are a nightmare.
Are there rear facing cameras on the stretch between Stirling and Perth then?

Edited by s2kjock on Wednesday 21st October 22:44
Mate im 21. If I get 3 points my car insurer comes to my house, busts open the door, yanks my pants down and violently rapes me... then when Im lying on the floor bawling they kick me in the gut and take my wallet. I aint gonna try it. ^^.

.
rofl
rofl
rofl
rofl
rofl
rofl
rofl

bananachips

243 posts

146 months

Friday 26th August 2016
quotequote all
simoid said:
Aye - lorry limiter c. 56mph. Threshold for prosecution (in theory) 57mph.

50mph on your speedo likely 46-49mph actual. Speed up! biggrin
Full steam ahead sir! Well by full steam I mean +5mph. Think I use my phone as a speedometer too.




lordf

690 posts

166 months

Tuesday 30th August 2016
quotequote all
Having not driven on the A9 for a few years I was faced with it on Sunday, I witnessed the worst driving I have seen in a long time... 99.9 of is the amount of utter morons who have no idea how the convergence zones at the end of the dual carriageway sections work.

Honestly it would have been quicker and safer on the drive home if they had no dual carriage ways and a 50 average for the whole dam road... I've come to think of these convergence areas more as bottlenecks of stupidity.

brrapp

3,701 posts

161 months

Sunday 4th September 2016
quotequote all
footsoldier said:
As of this moment, there are only two cameras in each single carriageway section, and the speed is measured between each two, and doesn't carry forward. (This applies to A9 North of Perth only). There are no cameras on the DC sections.

I have conducted numerous 'real world' tests of this, and have no points....
(Sometimes there are normal mobile cameras on DC sections, but not average speed)

Edited by footsoldier on Friday 23 October 21:00
Can anyone solve a wee (hypothetical, absolutely nothing to do with my trip to Aviemore this weekend) argument between my brother and me.
If I travelled at a 60mph average on a single carriageway section (with camera), then 90mph on a dual section without cameras),then 60 again on the next single carriageway section (with cameras) could the cameras on the single sections be used to show that my average over the dual section/single sections combined was in excess of 70?
My brother says yes, I say (and hope) no.

boardinscotland

1,219 posts

195 months

Sunday 4th September 2016
quotequote all
brrapp said:
footsoldier said:
As of this moment, there are only two cameras in each single carriageway section, and the speed is measured between each two, and doesn't carry forward. (This applies to A9 North of Perth only). There are no cameras on the DC sections.

I have conducted numerous 'real world' tests of this, and have no points....
(Sometimes there are normal mobile cameras on DC sections, but not average speed)

Edited by footsoldier on Friday 23 October 21:00
Can anyone solve a wee (hypothetical, absolutely nothing to do with my trip to Aviemore this weekend) argument between my brother and me.
If I travelled at a 60mph average on a single carriageway section (with camera), then 90mph on a dual section without cameras),then 60 again on the next single carriageway section (with cameras) could the cameras on the single sections be used to show that my average over the dual section/single sections combined was in excess of 70?
My brother says yes, I say (and hope) no.
Not really as the average speed cameras on the single carriageways are about between 1/2 to 1 mile from the duels. Technically you could but you would have to take into account the 60mph (and exact length before the duel) and then the duels exact length. Yes technically but not going to happen. Even so your average is generally a lot less than you think.
On the duels I would be more worried about the mobile vans the on the duels especially south of Pitlochry.

G

Halmyre

11,148 posts

138 months

Monday 5th September 2016
quotequote all
boardinscotland said:
brrapp said:
footsoldier said:
As of this moment, there are only two cameras in each single carriageway section, and the speed is measured between each two, and doesn't carry forward. (This applies to A9 North of Perth only). There are no cameras on the DC sections.

I have conducted numerous 'real world' tests of this, and have no points....
(Sometimes there are normal mobile cameras on DC sections, but not average speed)

Edited by footsoldier on Friday 23 October 21:00
Can anyone solve a wee (hypothetical, absolutely nothing to do with my trip to Aviemore this weekend) argument between my brother and me.
If I travelled at a 60mph average on a single carriageway section (with camera), then 90mph on a dual section without cameras),then 60 again on the next single carriageway section (with cameras) could the cameras on the single sections be used to show that my average over the dual section/single sections combined was in excess of 70?
My brother says yes, I say (and hope) no.
Not really as the average speed cameras on the single carriageways are about between 1/2 to 1 mile from the duels. Technically you could but you would have to take into account the 60mph (and exact length before the duel) and then the duels exact length. Yes technically but not going to happen. Even so your average is generally a lot less than you think.
On the duels I would be more worried about the mobile vans the on the duels especially south of Pitlochry.

G
It's interesting how slowly your average increases - for every mile you do at 60, you need to do the same distance again at 90 to average around 70. 30 miles @ 60mph = 30 minutes then 30 miles @ 90mph = 20 minutes, gives 60 miles in 50 minutes, or 72mph.

Here's another question - if you've got four speed cameras A, B, C and D, then A and B are paired, and C and D are paired, but are B and C also paired?

Brads67

3,199 posts

97 months

Monday 5th September 2016
quotequote all
Have we decided whether bikes are immune or not ?

Heading that way soon and whilst I usually take the military road , I`ll be heading A9 this time.

Rear facing cameras ?

J66JBo

260 posts

121 months

Tuesday 6th September 2016
quotequote all
Brads67 said:
Have we decided whether bikes are immune or not ?

Heading that way soon and whilst I usually take the military road , I`ll be heading A9 this time.

Rear facing cameras ?
From Perth north, I am almost 100% certain they are all front facing

J66JBo

260 posts

121 months

Tuesday 6th September 2016
quotequote all
brrapp said:
footsoldier said:
As of this moment, there are only two cameras in each single carriageway section, and the speed is measured between each two, and doesn't carry forward. (This applies to A9 North of Perth only). There are no cameras on the DC sections.

I have conducted numerous 'real world' tests of this, and have no points....
(Sometimes there are normal mobile cameras on DC sections, but not average speed)

Edited by footsoldier on Friday 23 October 21:00
Can anyone solve a wee (hypothetical, absolutely nothing to do with my trip to Aviemore this weekend) argument between my brother and me.
If I travelled at a 60mph average on a single carriageway section (with camera), then 90mph on a dual section without cameras),then 60 again on the next single carriageway section (with cameras) could the cameras on the single sections be used to show that my average over the dual section/single sections combined was in excess of 70?
My brother says yes, I say (and hope) no.
You are correct!

brrapp

3,701 posts

161 months

Monday 19th February 2018
quotequote all
Back on the A9 again at the weekend and I noticed something I hadn't before. On the first average camera section north of Perth, there are actually two short sections of 'dual carriageway' near 'Taste Perthshire' and near the Stanley turnoff. As these will have a 70mph limit, and are between the two cameras, how does a conviction on this stretch work with the two different limits in place?
I know the sections only have a single lane in each direction but as far as I'm aware, they are still classed as dual carriageways as the lanes are divided by a physical barrier.

J66JBo

260 posts

121 months

Monday 19th February 2018
quotequote all
brrapp said:
Back on the A9 again at the weekend and I noticed something I hadn't before. On the first average camera section north of Perth, there are actually two short sections of 'dual carriageway' near 'Taste Perthshire' and near the Stanley turnoff. As these will have a 70mph limit, and are between the two cameras, how does a conviction on this stretch work with the two different limits in place?
I know the sections only have a single lane in each direction but as far as I'm aware, they are still classed as dual carriageways as the lanes are divided by a physical barrier.
A good observation. Given there would be no way to calculate an average in the 60 sections I would say that no conviction would be possible.Does anyone anyone actually know of someone who has been caught by the average speed cameras on the A9?