Help re Nuvi - show maps and cams without route set?

Rebnats · Occasional Visitor Joined: Apr 10, 2009 Posts: 11

Hi, Sorry if this is a stupid question: Can Nuvi be turned on/operated in car just to show maps on screen with speed cameras etc as you drive along, without having to give it a route or destination so voice/sound kicks in.

Cheers.

PhilHornby · Posted: Fri Dec 02, 2011 1:49 pm Post subject: Along the road alerts.

Yes, but with a caveat:

Normal Speed/Proximity alerts are measured along-the-road, rather than as a radius. If you're not on a route, the nüvi would have to do lots of calculations to find out where you are distance-wise by-road, with regard to the surrounding alerts. So it doesn't Laughing

- it just looks down the road you are on.

So (as an extreme example), you could set a 5 mile alert for a camera that is on a road that joins the M1. If your calculated route takes you past that camera, you would get an alert when 5 miles away. But with no route set, the alert would trigger when you left the M1 and joined the actual road containing the camera.

I first noticed this, when accelerating hard out of a T junction to join a busy A road. A camera alert went off as I straightened the wheel, which was a shock to the system, to say the least. I'd not noticed the camera 50yds down the road - and neither had the Nüvi...

dales · Posted: Fri Dec 02, 2011 2:13 pm Post subject:

So I tend to set a route, but with the direction instructions turned off - like this.

Dales.
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Rebnats · Occasional Visitor Joined: Apr 10, 2009 Posts: 11

Thanks Guys, Much appreciated.

willton · Lifetime Member Joined: Jul 29, 2007 Posts: 150

but you can also simply have the speed cam alerts without setting a route - what dales does is (i think) so that he doesnt have to listen to the constant bleating of instructions when following a route, but does want to hear cam alerts.

the nuvi will show the speed cams on the move but only the ones you are alerted to as they occur, and as long as you have proximity alerts set.

Kremmen · Posted: Mon Dec 05, 2011 7:26 am Post subject:

My 2200 is never used for navigation so I never set a route (I have a very good built in system for that).

I'm therefore using the 2200 just for the camera warnings.

Without a route set I am receiving all the camera alerts on what must be a radius system because if I pass a crossroad with a camera on it I still get the warning.

When I used the Garmin's default 36 seconds radius I was getting warnings all over the shop.
Originally I got told I was in a 50mph specs zone when I was passing the M3 on the M25. Once I developed my own GPX converter and reduced the radius from 36 seconds to 12 seconds it disappeared. Smile

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PhilHornby · Posted: Mon Dec 05, 2011 4:40 pm Post subject:

M8TJT · Posted: Mon Dec 05, 2011 5:01 pm Post subject:

Shouldn't it have alerted travelling northbound on Tatton rd N at the point Alert Sound 4 and eastbound on the extension of Elms Rd. at Point 2? Otherwise what's the point of using a 1000' warning if it does not alert at 1000' when your'e on the right road? (I am assuming that the large red circle is a 1000' radius)

PhilHornby · Posted: Mon Dec 05, 2011 7:07 pm Post subject:

PhilHornby · Posted: Mon Dec 05, 2011 7:47 pm Post subject: A more succinct example

If you extend my original map down slightly, it includes one of the cameras in the Pocketgpsworld database - #83084 [South Facing gatso @ 30mph.]

I have a 15 second alert set for such a camera (using ASH10's Camera Manager), which equates to a distance of 675'.

The image below shows part of my journey in blue. The heavy red circle is the location of the camera, and the lighter red circle is the imaginary 675' radius around the camera. The alert actually triggered where the red star is shown. (I'd actually been stationary inside the 'circle' for quite a while).

M8TJT · Posted: Mon Dec 05, 2011 8:35 pm Post subject:

PhilHornby · Posted: Mon Dec 05, 2011 11:53 pm Post subject: Same road...

PhilHornby · Posted: Tue Dec 06, 2011 5:07 pm Post subject: Update

Kremmen · Posted: Thu Dec 08, 2011 7:43 am Post subject:

There is obviously some AI in there because it doesn't alert you to a camera you've passed even though it's still within the range.

I can't comment on it's AI when on a route because I've never planned one but it certainly warns of cameras within proximity on intersecting roads for me (no route planned).

As I said, when I used the default CSV 36 seconds it was quite noticeable how many cameras on other roads I was being alerted to. Dropping this to 12 seconds has killed off over 95% of them.
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