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jayaweera

GPS: Nuvi 250







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Hi,

Just like to what are reasonable proximity distances settings in METRES for:

Red Light cameras
Speed Cameras
School Zones

Thanks in advance
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david.goteborg

GPS: Garmin NĂ¼vi 760







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I have found that 500 meters for school zones and 150 meters for speed cameras work well. Red light camera warnings aren't of much use, since I wouldn't run a red light regardless if it was camera protected or not.
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victorbishop

GPS: Garmin Nuvi 760







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Here is what I use in a city:

Accident black spot alerts - 400 m
Low Bridges - 225 m
Mobile speed camera - 250 m
Red Light Camera - 150 m
School Zones - 200 m
Fixed Speed Camera - 150 m
( all are available here: POI Updates)

I drive a truck so the low bridge warning is good for me all though I had to get rid of all heights above my truck as the "false" warnings were driving me nuts.

Another thing I did was add custom audio alerts to the files i.e. "red light camera" or for school I have just "school ahead" but am going to change that to simply "school"

I hope that helps.

Vic
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phil400

GPS: Nuvi760







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Hello, I have a 760 Also but cant find anywhere to set the distance?...How do you go about it?
Thanks
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rsser

GPS: Garmin Nuvi 55LM, Oregon 600







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Hmm, haven't come across that facility in my web wanderings around the 760
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dteterin

GPS: Garmin nuvi 780







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phil400 wrote:
Hello, I have a 760 Also but cant find anywhere to set the distance?...How do you go about it?
Thanks


You can set distance in POI loader (Garmin) when you are uploading POI in to the device or leave it "auto" (how I do)
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ncampolo777

GPS: Garmin750







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Good idea set auto distance but I couldn't find it when I opened window to choose distance. Where is it?
Thanks
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aviegas

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dteterin wrote:
phil400 wrote:
Hello, I have a 760 Also but cant find anywhere to set the distance?...How do you go about it?
Thanks


You can set distance in POI loader (Garmin) when you are uploading POI in to the device or leave it "auto" (how I do)


If the distance is specified in the POI loader, all POIs will be set to that distance.

GPX files can set a proximity distance on a POI by POI basis. With a GPX file one can set different proximity distances for each camera speed.

I use a formula to calculate the distance based on speed and reaction time and it gives me the following values. The idea is that at the worst case the driver will be at 40% + 5Km/h above the rated speed and needs to decrease the speed to the rated value within a given number of seconds (8secs).

The values I use are:

20km/h -> 90m
30km/h -> 130m
40km/h -> 160m
50km/h -> 190m
60km/h -> 230m
70km/h -> 260m
80km/h -> 290m
90km/h -> 330m
100km/h -> 360m
110km/h -> 390m
120km/h -> 430m

I share my experience with more than a dozen friends and everyone find those values reasonable.





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