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Can moving garda cars monitor speed of oncoming cars??

  • 18-06-2011 6:41pm
    #1
    Closed Accounts Posts: 3


    Can moving garda cars monitor speed of oncoming cars??


Comments

  • Registered Users, Registered Users 2 Posts: 3,157 ✭✭✭Compton


    I think they must be stationary.


  • Registered Users, Registered Users 2 Posts: 23,157 ✭✭✭✭Alanstrainor


    Moved to Motors.

    No they cannot.


  • Registered Users, Registered Users 2 Posts: 23,795 ✭✭✭✭mickdw


    Slow down Mary for gods sake:D


  • Registered Users, Registered Users 2 Posts: 19,907 ✭✭✭✭MetzgerMeister


    No Mary, they can't.

    They have to stationary but they don't need to be ahead of you to catch you. They have been known to hide on on-ramps along the motorway and catch people from behind ;)


  • Registered Users, Registered Users 2 Posts: 11,435 ✭✭✭✭redout


    There are such devices which can detect speed from a moving vehicle and I am certain the police in the UK use them.

    As for use by An Garda Síochána - no idea.

    There is a Garda thread of some sorts on boards - try asking there.


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  • Registered Users, Registered Users 2 Posts: 14,679 ✭✭✭✭CJhaughey


    Not here yet, they have the Ka-band system in NZ which can detect the speed of an oncoming vehicle from a moving police car.
    The old system was Hawk, they moved to Silver Eagle and now have Stalker.
    Bad news for speeders that system.


  • Registered Users, Registered Users 2 Posts: 2,380 ✭✭✭daRobot


    CJhaughey wrote: »
    they have the Ka-band system in NZ which can detect the speed of an oncoming vehicle from a moving police car.

    They sure do. In Oz I got busted like this about eight years ago, so that technology has been around for ages.


  • Closed Accounts Posts: 17,733 ✭✭✭✭corktina


    mickdw wrote: »
    Slow down Mary for gods sake:D

    (think of the children)


  • Registered Users, Registered Users 2 Posts: 15,527 ✭✭✭✭Vicxas


    I think the new ones can monitor the speed of cars in front and behind but not oncoming, so speed away. but slow down if they make a mad U turn :)


  • Moderators, Home & Garden Moderators, Recreation & Hobbies Moderators Posts: 7,754 Mod ✭✭✭✭delly


    The system you may be thinking of is called VASCAR. Its defo used in the UK, but only for cars travelling in the same direction.


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  • Closed Accounts Posts: 29,472 ✭✭✭✭Our man in Havana


    VASCAR has now lost its approval and cannot be used to get a conviction for speeding in the UK.


  • Registered Users, Registered Users 2 Posts: 3,930 ✭✭✭Panrich


    I was told recently by a 'well placed' friend to be careful in future as the new traffic corps cars have been fitted with the ability to read oncoming numberplates and detect if your tax/insurance is in date and to calculate your speed by automatically subtracting the speed of the garda car from the detected speed. He had no resaon to lie to me as he brought the subject up and I had never heard of it before.


  • Closed Accounts Posts: 29,472 ✭✭✭✭Our man in Havana


    I was told recently by a 'well placed' friend to be careful in future as the new traffic corps cars have been fitted with the ability to read oncoming numberplates and detect if your tax/insurance is in date.
    Old news is still old.


  • Registered Users, Registered Users 2 Posts: 3,930 ✭✭✭Panrich


    Old news is still old.

    And the rest of my post?????


  • Closed Accounts Posts: 29,472 ✭✭✭✭Our man in Havana


    It has been promised for years and has never happened. Solicitors would have a field day challenging the evidence in any event. It is not the Dukes of Hazzard where a cop car does a U turn at speed to catch a speeder.


  • Registered Users, Registered Users 2 Posts: 25,705 ✭✭✭✭coylemj


    The standard speed gun works on the principle of the Doppler Effect which can be used to calculate the speed of another body relative to the speed of the observer. This means that if a cop car travelling at 150 km/hr is following a car doing exactly the same speed, the regular speed gun will return a speed reading of zero because relative to one another they are stationary.

    If the 'observer' (the cops) have an integrated device which calculates the speed based on the Doppler Effect and then adjusts based on their own speed i.e. subtracts their own speed if the observed car is travelling towards them or adds it on if he's travelling in the same direction, they can easily calculate the absolute speed of the other guy.


  • Registered Users, Registered Users 2 Posts: 85,547 ✭✭✭✭Atlantic Dawn
    GDY151


    While the Gardaí may have the technology in the car to display a speed of an oncoming car the accuracy of it would not stand up in court so you would get away with it. Most likely the Gardaí would pursue your car and say why were you doing X speed but couldn't actually issue you with a ticket.


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