Tricycles
Tricycles are just what you picture, a bigger version of the classic child’s trike. The main difference is that the three wheels on a full-sized tricycle are now the same size and have inflated rubber tires. Also, instead of pedalling directly on the front wheel, the rider on an adult trike makes use of pedals attached to a chain drive and frequently a three-speed set-up in the gearing.
Tricycles are a good choice when the rider’s sense of balance may be an issue, or if there is another physical impairment that prevents cycling on a two-wheel bike. Trikes are much more stable and do not tip easily. However, tricycles cannot turn sharply, and also require more space on the sidewalk or bike path as they are twice as wide as a regular bike and rider. Additionally, tricycles can sometimes be difficult to transport because of their width. Carrying a trike in a van or pick-up truck works well, but unless you have a tricycle with removeable rear wheels, you might have problems carrying one on a standard bike rack.
Another use of tricycles can be for hauling heavy loads. Pedicabs in many cities around the world are usually mounted on a tricycle frame with the driver up front pedaling and a cab for passengers mounted over the rear axle behind him. Sometimes too you may see vendors of fruit, hot dogs, ice cream, etc., selling their stock from a mobile trike stand. For regular personal use, tricycles can be easily equipped with large baskets in the front and back, and are well suited for toting lots of groceries, books, etc.
