On Board Trains Occupational Health and Safety Regulations

10.3 (1) Rolling stock shall be fitted with a roof or other structure that protects the operator from exposure to any weather condition that may be hazardous to the operator’s health or safety.

(2) If heat that is produced by self-propelled rolling stock may raise the temperature in the operator’s compartment or position to 27°C or higher, measured 1 m above the floor in the centre of the compartment, the compartment or position shall be protected from the heat by an insulated barrier.