Jump to content
SAU Community

Speed Gun Accuracy

Lwood

By Lwood,
in Queensland

 Share

Recommended Posts

Lwood Collaborator

Lwood

Posted
Posted (edited)

Got a speeding fine around 2 weeks ago 81 in a 60 zone, i've been told that the speed guns can be out by up to 3kms...

Is this true as i have been told that the cop has to take that into account when giving you the speeding fine, it said 81 on the gun and if i was doing 80 i would still have one point left and i wouldn't have to go on good behavior he also wrote down that i was on my opens when it clearly says that im a P plater and my car has p plates all over it.

Any help would be greatly appreciated,

Edited by Rhyses Pieces
Link to comment
https://www.sau.com.au/forums/topic/302132-speed-gun-accuracy/
Share on other sites
  • Replies 70
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

willL Experienced

willL

Posted
Posted

I know fixed speed cameras are definitely off by 3km, hence the reason for them taking off 3km of alleged speed when you receive the fine.

I don't believe it should be any different with a Laser Gun so if they are not taking off 3km I would fight it..

Imtorqing Community Regular

Imtorqing

Posted
Posted
Got a speeding fine around 2 weeks ago 81 in a 60 zone, i've been told that the speed guns can be out by up to 3kms...

Is this true as i have been told that the cop has to take that into account when giving you the speeding fine, it said 81 on the gun and if i was doing 80 i would still have one point left and i wouldn't have to go on good behavior he also wrote down that i was on my opens when it clearly says that im a P plater and my car has p plates all over it.

Any help would be greatly appreciated,

I think you will find that speedo's are out by on average three to five kilometres not the camera's/guns.

Their accurate right down to the kilometer so 81 is 81 as they use a laser and good for anywhere up to 700 plus meters.

Take it to court(you still get done for 81 if u lose) or pay the fine and behave yourself on good behaviour or take the suspension. Mind you if you drive a modified car it is dicey to be on good behaviour as defects cost points.

Hope it helps..

BstewyR33 Community Regular

BstewyR33

Posted
Posted (edited)

read up on the australian standards for hand held radar guns that the police use. that should tell you all the info you need

but why are you trying to contest 3klms inaccuracy? - disregaurd that

you could proberbly get off in court due to the police writing down your on opens when your actually on your P's - that might be your only ground to stand on, you'll still cop the 20k's over speeding fine

Edited by BstewyR33
Col-GTSX Grand Master

Col-GTSX

Posted
Posted

writing down open when your on p's means nothing...

they will simply re-issue the ticket with another 30 days to pay it...

dates, spelling does not matter a mistake will simply be corrected and a ticket sent in the mail...

as for accuracy, fixed speed cameras use line markings on the road to calculate speed in a meters per second equation. The computer than turns the meters per second into a kilometers per hour reads and bobs ya uncle you got a fine. It works the same way as the speed trap at the drag strip, your trigger the first beam and then the computers counts time until you trigger the second beam and from this reading calculates a kph/mph reading...

So fighting a fixed speed camera fine would be like fighting danny green for a ice cream... They simply produce the two photos and explain the mathematical equation...

As for laser guns, in my experience working with the QPS ive found their very accurate... They can detect a speed as low as 15kph from up to 1km away... To issue you a fine of 81 in a 60 zone the radar must be locked on you for no less than 40metres, which means you were given a very accurate reading/ticket...

So you must have been going 80ish...

Lets say your right and you were going say 79kph... Your still 19kph over the limit, a court is going to smash you over it... If you say yeah i was speeding but i reckon i was going 1 or 2 kph less than the ticket was issued for the court is not going to help you... They will see your trying to avoid a larger demerit and through it out at your cost... Speeding is speeding you have to cop it on the chin and move on, dont do it again...

Imtorqing Community Regular

Imtorqing

Posted
Posted
thanks for all the info fellas, i'll just take the fine. Need to keep an eye on the speedo next time

Or get an overspeed alert lol They were annoying in earlier commodores and on GPS's (A mate turned a work car's on and I was like whats that Fuc^&ing beeping)

willL Experienced

willL

Posted
Posted
lol ... Pretty sure that 3ks isn't going to make a different when your doing 20ks over ...

These topics should be banned ;)

40km/h over the speed limit = 6 months loss of license in Vic

if you were doing 42km over the limit then 3'ks is going to make a huge difference.

that is what he is fighting for..

astrotristan Grand Master

astrotristan

Posted
Posted
Got a speeding fine around 2 weeks ago 81 in a 60 zone, i've been told that the speed guns can be out by up to 3kms...

40km/h over the speed limit = 6 months loss of license in Vic

if you were doing 42km over the limit then 3'ks is going to make a huge difference.

that is what he is fighting for..

huh? where did 42 come from

Sexual_32 Proficient

Sexual_32

Posted
Posted

If its a hand held radar then they need to be recalibrated a fair bit.. you could ask to see when it was last recalibrated.. but i have no idea how often they need to be done.. I'd say ur fighting a losing battle.. that n the front of the courier mail didnt help today.

astrotristan Grand Master

astrotristan

Posted
Posted
im using it as an example to demonstrate how important only a few km's can mean..

my mistake :blink:

If its a hand held radar then they need to be recalibrated a fair bit.. you could ask to see when it was last recalibrated.. but i have no idea how often they need to be done.. I'd say ur fighting a losing battle.. that n the front of the courier mail didnt help today.

steve havnt seen you around here in ages

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Duncan
      What brakes on R34 GTT(Europe)

      By Duncan · Posted

      Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
    • 04-LOOX
      R34 GTR Vspec Garage Sale - All must go!

      By 04-LOOX · Posted

      Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
×
×
  • Create New...