TransPennine Express is trialling two tinted window films which it hopes will reduce solar heating and thus lower the energy used by train air-conditioning systems.
The operator expects the film supplied by Aura Brand Solutions to block more than 30% of solar energy and 99·9% of UV rays, while not obstructing passengers’ views.
The six-month trial will test different tint types on a Siemens Mobility Class 185 diesel multiple-unit to assess performance during summer and winter weather.