CROWDS gathered to watch demonstrations of lifesaving by the emergency services.
The simulated accidents took place on Castle Field, on Southsea seafront, between 10am and 5pm on Sunday and Monday.
On Monday Hampshire Fire and Rescue showed how they cut crash victims free from their cars using specialised equipment, while paramedics from private emergency firm MedRoc demonstrated resuscitation techniques.
The day also featured stalls and food to raise money for volunteer doctoring service Basics Hampshire.
Steve Raven organised the day with his mum Faith Raven, and said the day had been a great success.
He said: ‘There must have been thousands of people watching the demonstrations, they went down really well.
‘Basics provides a valuable service and it was great to be able to support them.
‘I also need to say a big thank you to MedRoc who stepped in at very short notice and really saved the day.’
The day almost fell victim to a small tornado which swept across Southsea Common on Sunday morning, knocking over stalls and tents.
But Mr Raven said the freak weather eventually subsided and disruptions were kept to a minimum.