The locomotive in its childhood and its first vacillating steps .

At the end of 18th. century , the steam engine became a real and positive factor in the industry, and different attempts had been made to apply it to the road vehicles. The merit to carry out the construction of the first locomotive that marched on tracks corresponds to Richard Trevithick, that, in February of 1804, used a locomovible machine to carry coal in the road of Penydarran, in South Wales , United Kingdom.