A team of engineers have been experimenting with controlled explosions to understand the impact a bomb has on a train carriage.
New technology has been developed, along with materials which could be fitted into existing carriages, to limit the fallout of a terror attack on train and tube carriages.
- Controlled explosions were carried out on a decommissioned Tube carriage
- High speed cameras slowed down the blast, allowing the impact to be analysed in detail
- A similar test was carried out on a carriage specially built to reduce the damage caused by a bomb detonating inside it
- Blast-protection measures included tethering down ceiling panels, plastic coatings on windows, and the use of lighter energy-absorbing materials
- Engineers investigated dividing carriages with materials that soak up energy and reduce the impact of a blast wave
More top news
The prime minister pitched her comments firmly towards unionists in her first campaign visit to Scotland ahead of the general election.
A police officer who spent six days crawling the London Marathon in a gorilla costume has finally completed the 26-mile route.
Nicola Sturgeon calls on voters to make sure "Scotland's voice is heard" and not "dragged back by the Tories" in upcoming vote.