[RFC_Gal]

This thing most likely uses GPS, what happens when it can not get a good signal? When it fails will the bike work at all?

It isn't like it is that hard to make a short range GPS jammer.

[Stoat]

This thing most likely uses GPS, what happens when it can not get a good signal? When it fails will the bike work at all?

The ISA Project UK The System

The System

Intelligent Speed Adaptation (ISA) is one of the most promising Intelligent Transport Systems in terms of its potential impact on safety. It is a system by which the vehicle "knows" the permitted or recommended maximum speed for the road. The standard system uses an in-vehicle digital road map onto which speed limits have been coded, combined with a positioning system which could be GPS, i.e. the satellite Global Positioning System, but could also be GPS enhanced with map matching and dead reckoning.

ISA can take various forms:

In terms of intervention level, it can be:

Advisory ISA:	the driver is informed of the limit and of violations but there is no direct link between this information and the vehicle controls
Voluntary ISA:	the system is linked to the vehicle controls but the driver can choose when to have the system enabled
Mandatory ISA:	no override of the system is possible

The speed limit information can potentially be extended to incorporate lower speeds at certain locations in the network and even in the future variation with current network conditions, based on weather, traffic density, the presence of incidents etc.

 

It isn't like it is that hard to make a short range GPS jammer.

Not for someone like Momma Stoat....also, most people are scrupulously law-abiding and would be terrified of the random vehicle checks that they have in Great Britain as well as the HUGE fines that would be meted out to scofflaws.