The bicycle is a wonderful and freeing mode of transportation. The bicycle, first invented in Europe in the nineteenth century, is today the world's most popular vehicle. The bicycle allowed for easy travel — 3 times more energy efficient than walking, and 3-4 times as fast as walking. Bicycles and horse buggies were the two biggest modes of private transportation just prior to the invention of the automobile. The grading of smooth roads in the late 19th century was stimulated by the wide use of bikes. Bicycles are pragmatic, functional, and efficient. They are a big component of a healthy urban transportation system. The bicycle is a simple and elegant machine, attracting just about any kid of all ages, from 2 to 92. Bicycling has many health benefits for you, and it does not directly contribute to global warming or environmental pollution. It is a wonderful sport that brings health and joy to millions of people everywhere.

Have you wanted to travel with your dog but find the whole thing too overwhelming? There are several ways of enjoying your bike and your pet at the same time — some are more safe than others.

With large dogs, you could do a fast version of walking the dog — you on your bicycle and your dog on a leash. Yes, this method gives both you and your dog exercise, but at what risk? You've increased the width that automobile drivers need to avoid, which may be fine on low speed, less travelled roads. But this is not advised on busier streets. Also your safety is now in your hands as well as the paws of your dog. Are you prepared for your dog quickly veering off track after a stray cat? What about your dog's safety? Be careful not to run your pet too long on a hard surface. This can not only cause joint problems, but also bleeding of the paws. There is a lot at stake and a lot of uncertainties when you bike-jog with your pet.

You could take even more risks by allowing your dog to run ahead of you without a leash. This would eliminate the problem of your safety being in the paws of your pet, but it brings up all sorts of other issues, like laws. It is unlawful in most areas to allow your dog to run freely without a leash, no matter how well trained he is.

For small to medium dogs try a pet bicycle trailer — a much safer method of bicycling with your pet. Actually, some pet bicycle trailers can accommodate larger pets up to 115 pounds. With one of these attached to your bicycle, you can maintain your active lifestyle and get your pet outside, too. When you go to the park to give your pet a little fun and exercise, why not take him there in a bicycle trailer — you get some exercise on the trip there and back, without tiring your dog out along the way. You can put any small to medium pet in a pet bicycle trailer. It might take some getting used to though, and it might take some training for your pet to be sure he doesn't go nuts while you're trying to bike. Two high quality bicycle trailers are the Trek'R and the Burley Tail Wagon.

Please, note these precautions when using a pet bicycle trailer: When riding, your dog should always be secured with the safety leash adjusted to the correct length. Do not exceed the recommended weight capacity of your pet bicycle trailer. Check tire inflation before every ride. Carefully check the connection of the trailer to your bicycle before riding. Be aware that riding with the trailer increases your braking distance and may affect your ability to control the bicycle. Thoroughly practice in a safe area before riding with the trailer in high-traffic areas. Always wear a helmet when riding.

Another way to enjoy your bike rides and your pets, too is a pet carrier that fits on your bicycle's handle bars. This is only recommended for small pets up to maybe 15 pounds — your specific pet bicycle carrier will specify the exact weight limit. With a pet bicycle carrier you can have your dog share in the fun of your bike ride. You can bike ride with your pet in front of you with a center-mounted bicycle pet carrier. You are closer to your pet and can better enjoy his company with a bicycle pet carrier, like the Pet Cruiser Sport Carrier and the Pet Cruiser Wicker Cruiser.

Here are some of the precautions when using a handlebar mounted pet carrier. Never leave your pet unattended or alone in the pet carrier. Never leave your animal confined or unattended in direct sunlight or anytime there is a risk of overheating. Be sure to secure your pet with the harness. Do not speed while riding your bicycle with your pet on board. Wear an approved bicycle helmet. Do not ride when it is raining or when the roads are wet. Do not ride after dark. Check everything over before riding. Do not exceed the weight capacity limit specified by your bicycle carrier. When installing safety straps, be sure they do not interfere with brake cables, brake levers, or gear control shifters of your bicycle.