Motorcycle-The Bike
A motorcycle is a two-wheeled,engine-powered,a single-track motor vehicle. Motorcycles vary considerably depending on the task as they are designed, such as navigating congested urban traffic,long distance travel,cruising, sport and racing, or off-road conditions.

They are one of the most common,most affordable forms of motorized transport in the world and,for most of the world's population.There are around 200 million motorcycles (including mopeds, motor scooters and other powered two and three-wheelers) used worldwide,or about 33 motorcycles per 1000 people.Most of the motorcycles,about 58%, are in the developing countries of Asia—Southern and Eastern Asia and the Asia Pacific countries, excluding Japan.But 33% of the cars (195 million) are concentrated only in the United States and Japan. As of 2002 data, India with an estimated 37 million motorcycles/mopeds was home to the largest number of motorized two wheelers in the world while China came a close second with 34 million motorcycles/mopeds.

Motorcycle is the engineering,manufacturing,and assembly of components and systems for a motorcycle that results in the performance,aesthetics and cost desired by the designer. The construction of motorcycles has standardized on a steel or aluminum frame, telescopic forks that folds the front wheel,and disc brakes. Some other body parts, designed for either aesthetic or performance reasons may be added. A petrol powered engine typically consisting of between one and four cylinders coupled to a manual five- or six-speed sequential transmission drives the swing arm-mounted rear wheel by a chain, drive shaft or belt.

The fuel economy varies greatly with engine displacement and riding style, ranging from a low of 29 mpg-US (8.1 L/100 km; 35 mpg-imp) reported by a Honda VTR1000F rider, to 107 mpg-US (2.20 L/100 km; 129 mpg-imp) reported for the Verucci Nitro 50 cc Scooter.But a specially designed Matzu Matsuzawa Honda XL125 achieved 470 mpg-US (0.50 L/100 km; 560 mpg-imp) "on real highways - in real conditions." Due to lower engine displacements (100 cc–200 cc), motorcycles in developing countries offer good fuel economy. In the Indian market, the second best selling company, Bajaj, offers two models with superior fuel economy: XCD 125 and Platina with 125 cc. The motorbikes with a company-claimed fuel economy of 256 mpg-US (0.919 L/100 km; 307 mpg-imp) and 261 mpg-US (0.901 L/100 km; 313 mpg-imp),respectively.

Electric motorcycles with Very high fuel economy are nearly silent, zero-emission electric motor-driven vehicles.Fuel cells and petroleum-electric hybrids are also under development to extend the range and improve performance of the electric motors where operating range and top speed suffer due to limitations of battery technology.