Question: What vehicle is used most commonly to transport people on the road in most countries?
About the article "Cycling", section "Equipment".

Candidate passages:
A vehicle is any non-living device that is used to move people and goods.
Unlike the infrastructure, the vehicle moves along with the cargo and riders.
Unless being pulled by a cable or muscle-power, the vehicle must provide its own propulsion; this is most commonly done through a steam engine, combustion engine, electric motor, a jet engine or a rocket, though other means of propulsion also exist.
Vehicles also need a system of converting the energy into movement; this is most commonly done through wheels, propellers and pressure.
Vehicles are most commonly staffed by a driver.
However, some systems, such as people movers and some rapid transits, are fully automated.
For passenger transport, the vehicle must have a compartment for the passengers.
Simple vehicles, such as automobiles, bicycles or simple aircraft, may have one of the passengers as a driver. 
A vehicle is any non-living device that is used to move people and goods.
Unlike the infrastructure, the vehicle moves along with the cargo and riders.
Unless being pulled by a cable or muscle-power, the vehicle must provide its own propulsion; this is most commonly done through a steam engine, combustion engine, or electric motor, though other means of propulsion also exist.
Vehicles also need a system of converting the energy into movement; this is most commonly done through wheels, propellers and pressure.
Vehicles are most commonly staffed by a driver.
However, some systems, such as people movers and some rapid transits, are fully automated.
For passenger transport, the vehicle must have a compartment for the passengers.
Simple vehicles, such as automobiles, bicycles or simple aircraft, may have one of the passengers as a driver. 
Vehicle weight influences the size and cost of a system's guideways, which are in turn a major part of the capital cost of the system.
Larger vehicles are more expensive to produce, require larger and more expensive guideways, and use more energy to start and stop.
If vehicles are too large, point-to-point routing also becomes more expensive.
Against this, smaller vehicles have more surface area per passenger (thus have higher total air resistance which dominates the energy cost of keeping vehicles moving at speed) and larger motors are generally more efficient than smaller ones.
The number of riders who will share a vehicle is a key unknown.
In the U.S., the average private automobile carries 1.16 persons, and most industrialized countries commonly average below two people; not having to share a vehicle with strangers is a key advantage of private transport.
Based on these figures, some have suggested that two passengers per vehicle (such as with UniModal), or even a single passenger per vehicle is optimum.
Other designs use an auto for a model, and choose larger vehicles, making it possible to accommodate families with small children, riders with bicycles, disabled passengers with wheelchairs, or a pallet or two of freight. 
Saint Helena has its own vehicle registration plate system.
Traffic drives on the left as is the case in the United Kingdom itself.
Indeed, two of the nearest countries to the islands — South Africa and Namibia — also drive on the left.
The speed limit is across the island, and with many of the roads single lane and on steep slopes the local etiquette is that drivers heading downhill give way to those coming up.
A minibus offers a basic service to carry people around Saint Helena, with most services designed to take people into Jamestown for a few hours on weekdays to conduct their business.
Car rental is available for visitors. 
Vehicle Excise Duty, also commonly known as 'VED', 'vehicle tax', 'car tax' and incorrectly referred to as 'road tax', is a vehicle road use tax levied as an excise duty which must be paid for most types of vehicle which are to be used (or parked) on the public roads in the United Kingdom.
Motor vehicles used on public roads should display a current vehicle licence (tax disc) as proof of payment which will not be issued without prior proof that the vehicle has valid MOT and insurance.
A 'Statutory Off Road Notification (SORN)' must be made for a registered vehicle that is not being used on the road, and which has been taxed since 31 January 1998.VED was introduced in the 1888 budget; the current system, which applies specifically to motor vehicles was introduced in 1920 and was initially paid directly into the Road Fund which was ring-fenced for road construction until 1937, after which time it was treated as general taxation.
Since 1999, the duty has been levied according to the CO2 emissions, starting with a reduced rate of £50, the scheme was extended into a graded system in 2001.
The duty raised in 2009.