[SystemSafety] underground trains without drivers

[Jan Sanders]

On 24.01.2013 22:55, Robin Cook wrote:
> On the general subject.
>
> Water traffic could be worse -
> there's no law against putting to sea in a bathtub. However the
> Automatic Identification System (AIS) already broadcasts position
> including speed, turn rate etc. for bigger vessels. Can anyone 
> comment
> on the spread of automation on water?
Larger ships are also equipped with radar-based anti-collision systems. 
In principle they sound an alarm for all contacts which decrease range 
and remain in constant bearing. Smaller vessels are not required to be 
equipped with AIS, but may be visible on radar.

Jan Sanders