Do cops use laser radar at night? - HCS Snowmobile Forums

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Old 11-11-2008, 07:00 AM   #1 (permalink)
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Do cops use laser guns (checking for speeding cars) at night? I have never been shot by one (I have a radar detector) at night in Michigan or in Ohio...yet. I just wondered if there is a reason they don't use them at night...at least as much as they seem to in the day time. Do they have a harder time shooting a car in the right spot, is it considered more dangerous to do it at night, are there fewer cops on duty, ect..??..?? I've posed this question to 3 cops I know and they won't give me an answer. Maybe they just don't like me..haha.

I did have the Sherrif shoot me during light to moderate rain one time. I don't know the mile marker but they always sit under the overpass on 69 west of Lansing close to the 96 west interchange.
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Old 11-11-2008, 07:26 AM   #2 (permalink)
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How Traffic Laser Works
To measure speed, traffic laser sends out a beam of pulsed
infrared light. The beam is tightly focused: at a range of
1000 feet, itís only about four feet wide.
Infrared is invisible to the naked eye ó the operator canít
see it and neither can you. But it is light and it behaves
accordingly. It travels in straight lines. And itís easily
reflected.
Traffic laser works as a rangefinder. It sends a pulse, then
waits for the reflection from the target car. From the time
needed for the pulse to go out and back, and from the speed
of light, it calculates distances to the car. These pulses are
sent frequently, up to 500 times a second. The changing
distance to the target over time is speed.
Laser canít see over hills or through opaque objects. The
laser beam must hit your car directly, line-of-sight from the
laser gun, to measure speed. Under ideal conditions, it can
read speed in less than one second.
The pencil beam means that, in operation, laser is very
different from radar. Radar cannot single out one vehicle in
a pack, so the speed reading is usually attributed to the
leader. The narrow laser beam reads only the vehicle it
strikes.

Laserís narrow beam imposes significant limits on its use.
It must be deliberately and carefully aimed. The operator
canít be moving. He must have a clear shot, preferably not
through glass.
So laser traps are always ambushes. The operator lies in
wait. As with radar, he canít read speed from the side. He
must have oncoming and departing traffic. Look for a
cruiser angled to the road, or broadside. Watch overpasses
and entrance ramps. He will likely rest the laser gun on a
partially-down side window to steady his aim. He will pick
off traffic as it comes. Or goes
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Old 11-11-2008, 08:05 AM   #3 (permalink)
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Quote:
How Traffic Laser Works
To measure speed, traffic laser sends out a beam of pulsed
infrared light. The beam is tightly focused: at a range of
1000 feet, itís only about four feet wide.
Infrared is invisible to the naked eye ó the operator canít
see it and neither can you. But it is light and it behaves
accordingly. It travels in straight lines. And itís easily
reflected.
Traffic laser works as a rangefinder. It sends a pulse, then
waits for the reflection from the target car. From the time
needed for the pulse to go out and back, and from the speed
of light, it calculates distances to the car. These pulses are
sent frequently, up to 500 times a second. The changing
distance to the target over time is speed.
Laser canít see over hills or through opaque objects. The
laser beam must hit your car directly, line-of-sight from the
laser gun, to measure speed. Under ideal conditions, it can
read speed in less than one second.
The pencil beam means that, in operation, laser is very
different from radar. Radar cannot single out one vehicle in
a pack, so the speed reading is usually attributed to the
leader. The narrow laser beam reads only the vehicle it
strikes.

Laserís narrow beam imposes significant limits on its use.
It must be deliberately and carefully aimed. The operator
canít be moving. He must have a clear shot, preferably not
through glass.
So laser traps are always ambushes. The operator lies in
wait. As with radar, he canít read speed from the side. He
must have oncoming and departing traffic. Look for a
cruiser angled to the road, or broadside. Watch overpasses
and entrance ramps. He will likely rest the laser gun on a
partially-down side window to steady his aim. He will pick
off traffic as it comes. Or goes[/b]
Good info. Just wondered if they use them at night. I can't see why not, but I just haven't been shot with one at night...yet and wondered if there was a reason for it. It is funny to hear about a "speed trap" here in Michgan because every day is a "speed trap" in Ohio.
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Old 11-11-2008, 08:18 AM   #4 (permalink)
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they are difficult to use at night because laser works in a way that pics are the largest object. It is hard to determine exactly what radar vehicle it really is.
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Old 11-11-2008, 09:32 AM   #5 (permalink)
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Cops are just afraid of the dark.............Its scary out there.
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Old 11-11-2008, 09:40 AM   #6 (permalink)
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Quote:
Cops are just afraid of the dark.............Its scary out there.[/b]
:beer_cheers:
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Old 11-11-2008, 09:49 AM   #7 (permalink)
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I've been hit with laser at night before!!
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Old 11-11-2008, 09:57 AM   #8 (permalink)
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Quote:
I've been hit with laser at night before!![/b]
He said Laser.... not Taser. :coffee-n-news:


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Old 11-11-2008, 09:58 AM   #9 (permalink)
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He said Laser.... not Taser. :coffee-n-news:
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Old 11-11-2008, 10:59 AM   #10 (permalink)
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Quote:
they are difficult to use at night because laser works in a way that pics are the largest object. It is hard to determine exactly what radar vehicle it really is.[/b]
Maybe I am not understanding you, but "radar" readout tells the strongest signal which comes from vehicle size and/or speed. Laser is vehicle specific and is focused by looking through a sight. It is no harder at night than it is during the day to use laser. And yes I am speeking from experience. As with any speed measuring instrument we must first through training and experience visually verify your speed through training and experience and compare it with the laser or radar. And rarely is it difficult to determine which vehicle is the speeding vehicle using radar.
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