How I Used High School Math to Beat a Speeding- Camera Ticket
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How I Used High School Math to Beat a Speeding- Camera Ticket


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  1. #1
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    How I Used High School Math to Beat a Speeding- Camera Ticket

    From the Real Clear Science Blog:

    How I Used Math to Beat a Speed Camera Ticket - Blog


    I have a friend who beat a 'laser-radar' charge by doing something similar: he asked in Court for proof of current certification of the Lidar gun, proof the officer had gone through training and proof he was certified to use the gun. Good luck!

    Jim

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    Its also worth pointing out that most car speedometers have a significant margin of error as well. Most australian states have +10% margin of error on at least fixed speed cameras because of this.

    In most australian states, fixed speed cameras are marked by multiple signs beforehand stating speed camera ahead with the enforced speed limit, and have to be placed within a certain distance of black spots (places where accidents are likely to occur). Non-police mobile speed cameras have to park where they are visible and have smaller signs near them.

    Highway patrol vehicles can get you without warning hiding from the side of the road but most will not bother unless you are significantly over (usually at least 15-20kph or even more above), and actually have have to pull you over to issue the ticket.

    The reason that fixed/mobile cameras are reasonably lax is that several motoring groups made sure these provisions were put in so the effect so that they didnt become pure money generators for state governments, so that they would be more aimed towards slowing people down in "dangerous" areas.

    That said, in as big and as sparsely populated country as Australia (A population of 23 million , spread over an area equivalent to the entire continental United States, and most of them situated in a very small number of widely spaced large cities), its still pretty damn annoying.


    What are the usual speed limits for various road types in the US?
    Last edited by nbound-au; 03-23-2013 at 07:41 PM.
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    The speed cameras and red light cameras are nothing but revenue generators. I believe most of them are operated by private companies under contract. They depend on people not fighting and simply paying.

    Asking whether the radar gun and officer was certified is a common defense and this is why most cops don't bother you unless you were going at least 15mph over the limit.
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    Speed limits here:

    In town, typically 30-45 mph
    Residential areas, 25mph
    Highways, 55-65 mph with 70mph in some areas. Texas has 80mph on a couple of roads.
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    Quote Originally Posted by n2rj View Post
    Speed limits here:

    In town, typically 30-45 mph
    Residential areas, 25mph
    Highways, 55-65 mph with 70mph in some areas. Texas has 80mph on a couple of roads.
    School zones (most states): 40kph (25mph)
    Residential areas: 50kph (31mph)
    Main streets: 60kph (37mph)
    Various secondary roads (main roads but usually not highways): 70-90kph (43-55mph)
    Most Highways/most rural roads: 100kph (62mph)
    Most Motorways/Freeways/'Dual Carriageway type' Highways: 110kph (68mph)
    Some Northern Territory Highways: 130kph (80mph) since 2007, previously unrestricted.

    Seems broadly similar. Any speeding offence here where you exceed the limit by 30km/h or more will result in some kind of license suspension.


    Some fixed speed cameras in some states have even been decommisioned due to "money grabbing" complaints.
    Or have been turned into warning cameras, which you will get a letter saying to slow down in that area the first 2 times (unless 30kph+ above limit) within a 12 month period.
    Last edited by nbound-au; 03-31-2013 at 03:50 AM.
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    School zones here are 35mph when children are present.
    Ryan, N2RJ

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    Quote Originally Posted by n2rj View Post
    School zones here are 35mph when children are present.
    Roughly the same idea here.

    Though in the ACT its between 8am and 4pm on School Days, and even includes Universities! :/
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    Quote Originally Posted by nbound-au View Post

    Roughly the same idea here.

    Though in the ACT its between 8am and 4pm on School Days, and even includes Universities! :/
    I think it may be 25 not 35. I'm headed out in a few, I will report back.
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    Quote Originally Posted by n2rj View Post
    I think it may be 25 not 35. I'm headed out in a few, I will report back.
    That's minimum limit, right? I get those confused ...

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    Speed limits in the US vary by state. Most city streets in Las Vegas are 35 or 40. Here in Utah, "cities" it's 25, school zones 20. On the highway, however, Utah has some 80 MPH stretches, but NV is 70. Keep in mind that the 500 mile stretch between Las Vegas NV and N. Utah is one of the most god-awful boring stretches of nothingness on the planet.

    When I returned to NY after living out west for 9 years, I laughed at their low highway speed limits. I struggled to keep my speed down as the thruway is posted 65 MPH. That's before I realized that New Yorkers laugh at these speed limits, too!

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    Quote Originally Posted by MrPogi View Post
    Speed limits in the US vary by state. Most city streets in Las Vegas are 35 or 40. Here in Utah, "cities" it's 25, school zones 20. On the highway, however, Utah has some 80 MPH stretches, but NV is 70. Keep in mind that the 500 mile stretch between Las Vegas NV and N. Utah is one of the most god-awful boring stretches of nothingness on the planet.
    Hehe, I think almost anywhere in the NT would be high up on that list too. Since introducing speed limits there, the road toll has apparently increased markedly too.
    nbound-au is a qualified Antenna, Satellite, and MATV installer.

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    I just returned to Lubbock, Texas from the Dallas/Ft. Worth area, some 350 miles, and 60% of that stretch of highway is now 75 mph. There is also a new limited access tollway between Austin and San Antonio that is limited to 85 mph (if you call that a limit). Much of I-20 and I-10 on far west Texas is now 80 mph.
    Last edited by Jim5506; 03-31-2013 at 03:10 PM.
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    Quote Originally Posted by Rickideemus View Post

    That's minimum limit, right? I get those confused ...
    It's 25 maximum in school zones with kids present
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    Quote Originally Posted by MrPogi View Post
    Speed limits in the US vary by state. Most city streets in Las Vegas are 35 or 40. Here in Utah, "cities" it's 25, school zones 20. On the highway, however, Utah has some 80 MPH stretches, but NV is 70. Keep in mind that the 500 mile stretch between Las Vegas NV and N. Utah is one of the most god-awful boring stretches of nothingness on the planet.

    When I returned to NY after living out west for 9 years, I laughed at their low highway speed limits. I struggled to keep my speed down as the thruway is posted 65 MPH. That's before I realized that New Yorkers laugh at these speed limits, too!
    Yeah but I did take that into account that they vary by state. Hell they even vary by county up here.
    Ryan, N2RJ

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