Families campaign after loss of sons in Merthyr Tydfil crash
The number of young people killed or seriously injured on roads has increased by 15% to 284 since 2012, Welsh Government figures have shown.
BBC Wales' Week In Week Out programme spoke to three families whose sons died in a car crash in Merthyr Tydfil in October 2015.
Rhys Jones, 18, and Ryan Gibbons, 20, were killed as the car they were in hit a telegraph pole.
Their friend Joe Daniels, 18, was left in a critical condition and died in hospital a month later.
The families have campaigned for restrictions on new and young drivers as well as tougher guidelines and punishments for careless and dangerous driving.