The saying "All roads lead to Rome" - a literal sense. In ancient Rome, it housed the most impressive road network. 29 roads interconnected capital of the Roman Empire conquered states. The Roman road was a straight pipe trackless high mounds around the edges. Its width was 11 meters and the thickness of the stone layer of 0.9 m for the construction of such roads took a tremendous amount of building material, -. 10,000-15,000 cubic meters of stone, on 1 sq. M. m., that is 10 times greater than the construction of modern motorways. The speed on the Roman road was 20 km / hour, which is more than in Europe and America in the middle of the XVIII century.
As a result of the fall of the Roman Empire in Western European road system began to break down. And the main way to movement becomes - water. For example the trade route "from the Vikings to the Greeks" at the Kiev Rus. In the Middle Ages, the main priority was to create a bridge. There was even a special monastic order "Brothers - bridge builders" that, during its existence from the twelfth to the sixteenth century, built 1700 bridges.
Since ancient times was considered a safe drive on the left, the traveler was carrying weapons and so it's best to have been movement on the left side of the road. When, in due course, on the roads began to move coach-crews, they replaced the pedestrians on the right side. After that rich people began to travel in a carriage to the left side and the right commoners. After the French Revolution of 1789 changed the rules of movement. By order of Napoleon's military vehicles started to move around the "common people" band, such rules have been established in all the countries conquered by Napoleon. Left-hand traffic remains in those countries that have not conquered England, Austria, Portugal, Russia. On the right side in Russia began to go only by 1917.
In today's world there are many interesting ways. For example, the German motorways on which no speed limits and no billboards and free travel.
The longest road is the Pan-American Highway its length almost 48 000 km and it passes through 14 states.
Karakoram Highway is located in the central (mountainous) Asia - the road which is located at an altitude of 4963 meters and is the highest road in the world. Moving along this road is very difficult, this is due to oxygen starvation while cars lose up to 70% of its capacity.
The widest road - Katy Freeway in Houston. Its width can accommodate 26 cars at a time.
In the Japanese city of Osaka is the road that runs through vysokoetazhnoe residential building, whose tenants have refused the demolition of the house. High-speed highway runs through the building on the 4th and 8th floor. From building vibration protection special design.