Petition Train Warning Horn use.

There is currently a TV advertising campaign warning of the danger on Railway Crossings.
I would like to have the rule regarding the use of Train Warning Horns reverted to using both high and low tones instead of the current 'low tone only rule'.
If you ask any child what noise a Train makes, they all give the same answer, nee-nor, or, dee-dah, or something similar.
The new rule of only using the low tone could easily be misinterpreted as being from a road vehicle or a water born vessel.
In my opinion, when it comes to Foot Crossings, this is an accident waiting to happen.
It may have been a contributory factor in this incident; Fatal accident at Mexico footpath crossing (near Penzance) 3 October 2011.
I too, as a Train Driver, have had near misses at various sites and am convinced that the use of both high and low tones of the Warning Horn may well have prevented these incidents.
I would urge the Minister in charge to review this change in the Drivers Rules without delay.