Ans: Helicopters as compared to roadways and railways are one of the safest modes of travelling. They are not only operated for short distance travel but is also very safe and convenient for certain military operations, lifting of heavy weight items, aerial photography etc. the presence of an emergency landing system also gives it an edge over other transportation services. also remember that helicopters are used all over the world for immediate emergency services all over the world making it one of the most dependable and efficient ways of travelling.