Carpool

Carpooling is the practice of sharing car journeys with others. This means more than one person travels in a single vehicle. By doing this, people can prevent others from needing to drive to the same location alone. This method is considered a type of Demand-Responsive Transport (DRT) service. Carpooling is important because it maximizes the seating capacity of a vehicle. Without sharing, many seats in cars remain unused during trips.

The mechanism of carpooling involves several steps to connect people. First, drivers and passengers search for available journeys through various mediums. They might use public websites, social media, or specialized smartphone applications. Some people use carpooling agencies or specific pick-up points to find matches. Once a match is found, the participants contact each other to arrange specific details. They must agree on meeting points, costs, and space for luggage. Finally, they meet and carry out the shared journey as planned.

There are many different types and stages of carpooling. One common form is commuting, where people travel to work together. Another type is for longer, one-off journeys. Some arrangements are very formal, while others are more casual. On long trips, passengers might only join for certain parts of the journey. They then give a contribution based on the specific distance they travel. This adds flexibility and helps more people save money. There is also a form called "slugging," which is informal carpooling between strangers where no money changes hands.

Carpooling has a significant history tied to global events. It first became prominent in the United States during World War II. During this time, people used "car clubs" to conserve rubber for the war effort. The US Office of Civilian Defense even encouraged neighbors to share rides. Carpooling returned to popularity in the mid-1970s due to the 1973 oil crisis and the 1979 energy crisis. During that era, companies like Chrysler and 3M organized the first employee vanpools.

Statistical data shows how carpooling usage changes over time. In the United States, carpooling peaked in 1970 with a commute mode share of 20.4%. However, it declined to 9.7% by 2011, largely because gas prices fell by 45% during the 1980s. In 2009, carpooling represented 43.5% of all trips in the United States. It also made up 10% of all commute trips. Interestingly, over 60% of carpool commutes are "fam-pools," meaning they consist of family members. In Europe, the BlaBlaCar service has grown to include more than 80 million users.

Sharing costs is a central part of the carpooling experience. Usually, travelers divide the expenses equally between all occupants. These expenses typically include fuel and tolls. If one includes vehicle depreciation, maintenance, insurance, and taxes, the cost is around $1 per mile. Some modern platforms use smartphones to manage urban trips in real time. These systems allow drivers to pick up passengers along their entire route. The technology automatically calculates an equitable share of costs based on the distance traveled.

Governments and organizations use various tools to encourage this behavior. Many authorities implement High-Occupancy Vehicle (HOV) lanes. These are special lanes where only vehicles with two or more passengers are allowed to drive. HOV lanes provide practical incentives by reducing travel time and expense. Some countries also reserve specific parking spaces just for carpoolers. While most places encourage it, some countries have strict rules. For example, in Hungary, carrying someone for a cost share is a tax crime unless the driver has a taxi license.