The Road bike is probably the most popular type of bicycle. The term can refer to bicycles specifically made to run on paved roads, as opposed to mountain bikes which have the specifications such as full suspensions to take on the demands of off road biking. Road bikes include racing and commuter bikes which people use as an alternative to motorized vehicles. The dominant character along road bikes are their lightweight frames which helps in boosting speed.
A less common variant of the road bicycle is the fixed gear bike or commonly known in the US as fixie bikes or simply fixies. Over the years, fixie bikes have developed a cult following some bicycle enthusiasts in different parts of the world. Fixies have their sprockets directly screwed onto a fixed hub so can not freewheel. Since the pedals turn in the same direction as that of the rear wheel, resisting the pedals' motion allows the cyclist to stop the bicycle without the use of brakes. If you want to try out fixed gear, extra precaution is needed on your first rides since there is a big difference between riding a fixie and riding a conventional road bike.
A road bike consists of a number of components, each of which has its important role in bicycle dynamics. Some of the basic components include the pedals which powers the bicycle by transferring energy to the rear wheel, the chain and chainwheel, the frame which holds the different parts together, the saddle which supports the body of the cyclist, the handlebars which is equivalent to the steering wheel of a car, the tires, and the brakes which allows the cyclist to stop the movement of the bicycle.
Road bikes have been regarded as as the perfect alternative to motorized road vehicles. Unlike cars, road bikes do not emit pollutants which contribute to global warming and are also major causes of respiratory diseases. Pedaling also works out important muscles in the legs and in other parts of the body and is proved to be a good form of cardio exercise.
Source by Alan Craner