Re: [NSW] Cityrail problems today

[pmilne@the.net.nz (Peter)]

In article <3923ED25.ABA14D48@efs.mq.edu.au>, eoliver@efs.mq.edu.au 
pontificates...
>
>
>   mk@netstra.com.au (Michael Kurkowski) wrote:
> > Hi all,
> >
> > An ant got squashed on a track somewhere on the Blue Mountains line
>today.
>
>Ants are actually quite a common cause of problems. They get into
>signalling relays. Their electrical and mechanical characteristics are
>not helpful to the successful operation of the relays.
>
>In the southern US, fire-ants get into the relays. Their characteristics
>are not helpful to the successful operation of the signalling
>maintainers, either.
>

Years ago I saw a single aspect searchlight signal full of ants. I do not 
remember whether they blocked the light, or the movable device with the 
colour filters. I presume they enjoyed the heat.  

Peter