Ep 1. Deadliest Trains

Impossible Engineering season 4 episode 1 titled "Deadliest Trains" takes us on a thrilling journey through the history of rail transport: a transportation network that has connected people, goods, and transportation vehicles for over 200 years. The episode explores the deadliest trains that were used for cargo and passenger travel, and the innovative engineering solutions that were created to make the trains safer for the travelling public.

The episode begins by exploring the phenomenon of train derailments and their deadly effects. Hundreds of thousands of people have died due to train accidents throughout history, and engineers around the world have been working tirelessly to create technologies that prevent these accidents. Before the advent of modern technology, train travel was extremely dangerous, and accidents were frequent. The episode focuses on several accidents throughout history, including the Montparnasse derailment of 1895, one of the most famous train accidents in history.

The episode also explores the history of the design of passenger trains, with rail travel becoming increasingly popular during the 20th century. Engineers were faced with the task of creating trains that were comfortable, fast, and safe. The episode looks at some of the most iconic railway designs of the 20th century, including China’s high-speed train, the Hikari Shinkansen in Japan, and The Flying Scotsman in the UK.

With the increasing demand for cargo transportation all around the globe, engineers faced the challenge of creating trains that could move bulk cargo safely and efficiently. One example of this challenge is the unit train, which is a long train of identical, usually freight, cars travelling together. The episode looks at some of the most important innovations that made unit trains safer for goods and people. The experts delve into how the train's wheelset configuration and tonnage capabilities made it the most efficient way to transport single commodities over long distances.

The episode also explores the world of underground trains, which require a specific set of engineering solutions as they move through complex underground tunnel systems. The episode studies the London Underground, one of the oldest underground railway networks in the world, and how it has adapted its infrastructure to cater for its ever-growing passenger demands

Throughout the episode, experts and engineers are interviewed, who delve deep into the design and engineering solutions that are involved. They explore the use of advanced computerized control systems to ensure train safety, redesigning train cars, fixing rail systems, and implementing grade separation procedures that are meant to reduce the risk of accidents.. It also highlights the fact that not only are trains becoming safer through advances in technology, but it is also being done in an environmentally friendly manner, with the use of electric and hybrid trains.

In conclusion, Impossible Engineering season 4 episode 1 does an excellent job of showcasing the history of rail travel, focusing predominantly on the challenges presented to engineers over the years and their response in creating solutions to ensure public safety and passenger comfort. The episode highlights the impressive evolution of rail technology and engineering over the centuries, and how it has continued to become more efficient, safe and eco-friendly. With constant innovation, trials and experimentation, it is a marvel to see how far rail transportation has come, and we can only imagine what the future will hold for this amazing industry.