This can be achieved by internal or external expansion. Because the different firms are involved in the same stage of production, horizontal integration allows them to share resources at that level. Topics
Up until the 1990s, the average freight train in Canada was about 5,000 feet (1.54 kilometres) long and weighed 7,000 tons. But it is now not uncommon to see these trains stretch to 12,000 feet, sometimes as much as 14,000 feet (more than four kilometres), weighing up to 18,000 tons.he CN train involved in the derailment outside Brighton, for example, was built as a conventional train would be, with three locomotives in the front hauling 137 rail cars behind. But it was stretched out 8,850 feet and weighed nearly 12,000 tons.
We know that Train A is moving 40 mph, and will therefore travel 40 miles in the hour before Train B leaves Eastford. This means that by the time Train B starts moving, the two trains are only 260 - 40 = 220 miles apart. Now we can use the relative speed of the trains, which is 40 + 70 = 110 mph.