Hello,
Here is an idea of "invention", or more exactly of application for mobile phone which would have saved me from losing 45 € and 1 point on my driving license!
I live on top of a small hill, and in the morning to go to work I take a wide avenue lined with trees that go down about 900 meters. Of course, on this avenue the speed is limited to 30 km / h!
Usually I ride it by bike, and as much to tell you that even on bike, to stay at 30 km downhill, without pedaling, it is not easy and it is necessary to brake continuously, even in free-wheeling, not to exceed the speed limited to 30 km / h.
... and it did not miss, a few days ago, I borrowed by car, and vlan, flashed 35 km / h: 45 € and 1 point less! (finally, there is only when I borrow this avenue
in a carriage with my horse that I'm sure I'm not speeding!)
In short, I told myself that a gadget could have reminded me, in a short moment of inattention, the speed limit.
I know that some car GPS boxes offer this option, more automatically by polling a national file on the speed limits of French roads, but I think a mobile phone app would be more reliable.
Since most mobile phones are able to position themselves with GPS coordinates, it must be relatively simple to regularly calculate the speed of travel over short distances. Then simply indicate the maximum speed for the phone to signal you with a ringtone that you exceed this limit.
The principle could be that verbally, when you cross a limitation sign, all you have to do is say the limitation number, or a phrase like "limitation 30", so that the app records the phrase and vocally recognizes the limitation digit. speed and monitor your speed. And as soon as you reach that speed, or come dangerously close to it, the phone sounds a loud ringing to get you out of the intellectual torpor that small speed limits tend to provoke on some sometimes dreamy drivers of which I am a part.
Ideally, the application could record the GPS position and the limitation so as to avoid an oversight.
(Here we do as we said: for royalties, send them to Grelinette by MP ...
)