Overview
- Reports on Friday showed onboard temperatures rose several degrees above outside readings with independent checks reaching the mid-30s C and some passengers saying it felt near 40C.
- Operators confirmed many newer zero-emission vehicles have HVAC systems while a smaller number of older buses were never fitted with air conditioning.
- Companies and network managers said cooling is constrained because frequent door openings and stop-start service let warm air in, reducing air-conditioning effectiveness.
- Transport firms have ordered immediate steps such as daily AC checks, extra water for staff, relaxed driver uniform rules, and advice for passengers to carry water.
- Campaigners and commuters warn the heat deters people from using public transport and disproportionately affects elderly, disabled and young passengers, prompting calls for targeted investment in fleet cooling and heat‑response planning.