
Sandite is a substance used on railways in the UK, Ireland, US and the Netherlands to combat leaves on the line, which can cause train wheels to slip and become damaged with flat spots. Sandite consists of a mixture of sand, aluminium and a unique type of adhesive. Leaf build up on the railhead can also cause signalling issues and `disappearing t....
Found on
http://en.wikipedia.org/wiki/Sandite

substance sprayed on running rails to improve adhesion during falling leaves season
Found on
http://www.encyclo.co.uk/local/21542

a paste applied to the rails in autumn, to prevent trains slipping on crushed leaves.
Found on
http://www.scot-rail.co.uk/page/Glossary
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