As I understand it, it's all down to the amount of expansion they allow for in the track design. The Netherlands, being a northern Eurpoean coastal country, wouldn't expect the same tempertures as more southerly countries, and if the temperture goes outside the range the expansion joints can cope with, the track will buckle.
I expect the same would happen here if we had similar tempertures to cope with. The only difference is that we're so used to rubbish track that we probably wouldn't notice.
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