This website shows three different types of public transportation. Transportation is the action of moving from one place to another place. There are many different kinds of transportation. You can go from one place to another in the air, on the ground, or in the water. If you use public transportation, you save the environment by not burning fossil fuels from your car. You can also save money if you take a different method of transportation than a car. In Massachusetts you can buy a monthly pass to take unlimited rides on the train and the ferry for $200.