>=20
> In tunnels near villages, people travel through them. So when the lights=
=20
> brighten up, they will now that a train is coming and have to move out=20
> of the tunnel.
>=20
> The lighting are solar based hence they need to be dimmed to conserve pow=
er.
>=20
>=20

Who is this for? The railroad company that wants to dim the lights to conse=
rve=20
power or is it a warning system for the people in the villages?

Why not use the same system (whatever that is) as is used for the lights an=
d=20
bars on railroad crossings? Then you get the same safety levels as for a=20
crossing. It too must sense a train from about 2km away, or?

/Ruben



=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124
200 39 Malm=F6 Sweden
Tel +46 40142078
ruben@rjjournal.net
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

--=20
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