It is a top tourist destination – but what the guidebooks don’t tell you is that Thailand’s roads are lethal. Now a group of mothers whose sons died in a bus crash are campaigning to change that. Bruno Melling Firth, Max Boomgaarden-Cook, and Conrad Quashie – all 19 years old – arrived in Thailand for a 9-week holiday in June. They had saved up all year for a final holiday together before starting university. Four days into their trip, they boarded a night bus in Bangkok. There were heading for the ancient city of Chang Mai, which lies 11 hours by road to the north. They didn’t make it.