❓ This Question on Notice from Hon Dr Brad Pettitt inquires about Transperth's heat speed restrictions, specifically asking about temperature thresholds for line closures, contingency plans for alternative transport, and the provision of additional rail replacement buses during high temperatures.

⏳ Awaiting AnswerQoN 2587Legislative Council
Asked
17 September 2026
Portfolio
Transport and Major Infrastructure

QuestionView source ↗

I refer to heat speed restrictions on Transperth trainlines, and ask:
(a) is there a certain temperature that would cause Perth trainlines to close;
(b) if yes to (a), what is the temperature threshold for each trainline;
(c) if yes to (a), are there contingency plans in place in case trainlines need to close:
(i) what alternative transport options will be provided to meet transport demand; and
(d) in the event of temperatures exceeding the threshold for heat speed restrictions to be implemented, does Transperth offer additional rail replacement buses to make up for transport demand?
Answered on

AnswerView source ↗

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