| Transport for London Digital Speed Map - TomTom & Garmin
 Transport for London (TfL) have launched a digital speed map.
Available for download on TfL's web site, there are two distinct options. First, a basic POI based map available in Garmin & TomTom formats as well as KML that consists of a set of POIs covering the various enforced speed limits and secondly an application available only for TomTom devices that will continually warn if you exceed the speed limit for more than 15secs.
The files are an off-shoot from TfL's Intelligent Speed Adaptation (ISA) project exploring new technology in the fields of speed management. Any technology requires an accurate digital speed 'map' and hence the data has been captured for these purposes. The digital data will be made available to to anyone who wishes to create an application or indeed as here for personal use.
However a quick peek at at the downloaded POIs show one category called 'Unknown-Limits', that's encouraging!
TfL claim, "The map has been collected from a 'drivers point of view' and records the physical location of speed limit signs on the road network. Both terminal and repeater signs have been collected, with attributes used for distinguishing sign direction for double-sided signs. Collection involves recording only the actual sign records, which are later used to derive the speed limit for road lengths in a vector digital map."
We haven't yet had an opportunity to test the POIs but if you want to have a go, both these and the software plug-in warning system version can be downloaded from TfL's web site here.
I've just installed the software version that uses the SDKRegistry plug-in as used by many other add-on applications and will report back.
ISA Menu
http://www.tfl.gov.uk/isa/
| Comments
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 Posted by Darren on Fri Mar 27, 2009 5:53 pm |
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Not a terribly encouraging start. Installed on a 720 and whilst the menu's appear, I cannot access the configuration screen. Pressing the Config Menu Button does nothing whatsoever!
The Start/Stop buttons trigger a Start/Stop message though.
Anyone else brave enough to test?
Darren Griffin |
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| Posted by G1LIW on Fri Mar 27, 2009 6:55 pm |
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I heard about this a month or so ago, downloaded the POI file, and whaddya know, it doesn't work, my copy of TTNv6 couldn't even see the darn OV2s.
Tried it again today, wondering if they'd somehow fixed the problem... nope. Still cannot see the poi files in TomTom.
Hardly a surprise from a government-supported project, funded by public money.
Roger, G1LIW
Google Pixel 3a XL Android Smartphone | SatNav Sygic for Android | Waze for Android | CamerAlert for Android | Blog http://rogersblant.blogspot.com/ |
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| Posted by Darren on Sat Mar 28, 2009 9:00 am |
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The POIs work fine albeit they are of limited value as they are. They should work fine on your device too?
Darren Griffin |
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| Posted by PaulB2005 on Sat Mar 28, 2009 9:06 am |
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I'll try these POIs later but on an SD Card. With Garmin you replicate the folder structure on the SD Card i.e. make the folder "POI" under the folder "Garmin" in the root of the card and put the GPI file into the POI folder...
Is this true for TT as well? I assume these go in the map folder like other POIs?
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| Posted by Darren on Sat Mar 28, 2009 9:20 am |
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| PaulB2005 Wrote: | I'll try these POIs later but on an SD Card. With Garmin you replicate the folder structure on the SD Card i.e. make the folder "POI" under the folder "Garmin" in the root of the card and put the GPI file into the POI folder...
Is this true for TT as well? I assume these go in the map folder like other POIs? |
Correct, they just go in the map folder as with all other POIs. I'm wondering if G1L1W's issue is related to POI limits?
Darren Griffin |
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| Posted by G1LIW on Sat Mar 28, 2009 10:23 am |
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Don't think so, but I'll check, and get back to you here. Too tired now, just got home from a long night shift 
Roger, G1LIW
Google Pixel 3a XL Android Smartphone | SatNav Sygic for Android | Waze for Android | CamerAlert for Android | Blog http://rogersblant.blogspot.com/ |
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| Posted by PaulB2005 on Sat Mar 28, 2009 11:17 am |
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Just loaded the POIs on a Garmin and now have lots of lovely grey dots everywhere - usually because there are over 256 categories but i only have 16 plus the PGPSW speed camera database. This POIs database only adds a handful more...
Looking at a demo route it seems like it would be a nightmare as the speed limits near me change from 20-30-20-30 more often than the weather changes. The screen would be littered with icons plus it creates loads of Alert:20 and Alert:30 alerts.....
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| Posted by rayle on Sat Mar 28, 2009 12:04 pm |
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| PaulB2005 Wrote: | Just loaded the POIs on a Garmin and now have lots of lovely grey dots everywhere - usually because there are over 256 categories but i only have 16 plus the PGPSW speed camera database. This POIs database only adds a handful more...
Looking at a demo route it seems like it would be a nightmare as the speed limits near me change from 20-30-20-30 more often than the weather changes. The screen would be littered with icons plus it creates loads of Alert:20 and Alert:30 alerts..... |
Rather than try the POI on my Satnav, I have converted them to CSV and had a look at them using AutoRoute,
Voice reminders of speed limit would drive me bonkers as they would in some places be going all the time, you are right, a real nightmare.
There are about 100 unknown speed limits which seem to be in and around the 20mph Roads.
I can, if anyone would like them, upload as a CSV file, subject to the copyright on the website, which states "Along with the source code of our application, we are making available Point of Interest (POI) files to allow developers to create applications for other common satellite navigation systems."
Garmin Nuvi 2589, IPad2, RAC 05' |
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| Posted by SpikeyMikey on Sat Mar 28, 2009 12:26 pm |
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I've downloaded and configured the POI's for TTN6 and they show OK. I set warnings for 20 @200yds / 30 @300yds etc. This may not be the best setting.
As already mentioned I end up with a lot of alerts on certain routes, also the icons are a lower resolution version of the PGPSW ones for Gatsos, which is a bit confusing.
All in all I don't think I would use them due to the constant earache. Unless someone tells me they can be configured better.
G1LIW: Have you enabled the POI's and set the 'Warn when near' option?
Mike
TT GO6000 (Europe); iPhone and iPad Pro with iOS TT GO & MyDrive + CamerAlert |
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| Posted by G1LIW on Sat Mar 28, 2009 3:45 pm |
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ok, few hours sleep has done wonders.
I've gone into my TTNv6 PDA and, after checking that they're not being used, purged all the POI files that aren't being used.
As you can see from the collected screen shots below, there are 106 POI categories in my copy of TTv6. Of these, 52 categories are active. I cannot figure out how, if it's even possible, to delete the "factory-fitted" POI categories, but even so, I decided to test a theory, and have found that it won't even pick up the "Public_Toilet_PGPSW.ov2" file either 
Anyone got any ideas on this one, cause I'm all out.
Here's the composite screen shot, shots in order from first menu top left, moving along left to right, row by row....
Roger, G1LIW
Google Pixel 3a XL Android Smartphone | SatNav Sygic for Android | Waze for Android | CamerAlert for Android | Blog http://rogersblant.blogspot.com/ |
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| Posted by Darren on Sat Mar 28, 2009 3:54 pm |
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Almost certainly too many custom POIs installed. Each device has a limit, not sure what it is on your ONE (and factory installed POIs don't count towards this).
You can test by uninstalling all the added POIs except our speedcams or else you'll need to re-configure alerts later.
Then add the Public Toilets POI or one of the tfL ones and test.
Darren Griffin |
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