Written Question·Department for Transport·UIN 14133

Railways: Temperature

Tabled: 29 June 2026

Answered: 7 July 2026

Question

Ayoub Khan

To ask the Secretary of State for Transport, how many instances of heat-related speed restrictions on the rail network occurred in each of the last five years.

Answer

Keir Mather

Network Rail has recorded the following number of daily incidents of “Critical Rail Temperature speed-restriction incidents” as follows: Financial YearHeat speeds (Incident-days)2019/205272020/215752021/2210802022/2316222023/246242024/253322025/268032026/...

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