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PUBLIC TRANSPORTATION:
TYPES OF PUBLIC TRANSPORTATION
Buses
Paratransit
Streetcars
Light-Rail Transit
Heavy-Rail Transit
Commuter Rail Transit
Automated Guided Transit
Ferries
DEVELOPMENT OF PUBLIC TRANSPORTATION IN THE UNITED STATES
HISTORY

AUTOMOBILE:
POWER SYSTEM
Engine
Engine Types
Fuel Supply
Exhaust System
Cooling and Heating System
DRIVETRAIN
Transmission
Front- and Rear-Wheel Drive
SUPPORT SYSTEMS
Suspension System
Wheels and Tires
CONTROL SYSTEMS
Steering
Brakes
ELECTRICAL SYSTEM
Ignition System
SAFETY FEATURES
HISTORY
Automobiles Through the Years
Internal-Combustion Engine
Early Electric Cars
AUTOMOBILES IN THE 20TH CENTURY
NEW TECHNOLOGIES

AUTOMOBILE INDUSTRY:
ECONOMIC IMPORTANCE
Domestic Impact
Foreign Trade
HOW CARS ARE BUILT
Research, Design, and Development
Manufacturing and Assembly
Sales and Service
Customer Feedback
HISTORY OF THE AUTOMOBILE INDUSTRY
Early Automobile Concepts
Henry Ford and Mass Production
Other Automakers
The Great Depression of the 1930s
Labor Unions and Strikes
Wartime Production
Postwar Production
Automobile Safety
Foreign Imports and the Energy Crisis
The 1980s and 1990s
FUTURE AUTOMOBILE INDUSTRY TRENDS
Computerization
Alternative Fuel Research
Materials and Safety


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Buses


An electric trolley bus gets its power from electrical wires suspended above city streets. The bus is connected to the cables by a pair of contacts mounted on top of the bus.


Double-decker buses are a popular form of public transportation in London, where parking can be extremely difficult. The advantages of using buses within a city include the low cost, the relative freedom from stress in driving and parking a car, and, in this case, the view. Efforts to conserve energy and reduce traffic and pollution have encouraged more people to use buses and more cities to extend the scope of their bus systems.

Bus service operates diesel or electric buses along defined routes and according to published schedules. Buses vary in size from minibuses, which can carry up to 20 passengers, up to multisection articulated buses, which have an extra passenger unit attached by means of a flexible joint. Articulated buses can carry as many as 130 passengers. Buses operate on both city streets and highways. Some streets and highways have special lanes reserved only for bus transit, thus increasing the speed and efficiency of bus travel. Trolley buses are electrically powered buses that use electricity from overhead wires mounted along city streets. The use of electric power reduces pollution, noise, and the need for refueling but also limits the routes a trolley bus can take.

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TRUCK:
LIGHT TRUCKS
MEDIUM TRUCKS
HEAVY TRUCKS
TRAILERS
TRUCKING OPERATIONS AND REGULATIONS
HISTORY

ROAD:
TYPES OF ROADS
Highways
Urban Streets
Rural Roads
ROADWAY ENGINEERING
Roadbed
Base Course
Wearing Course
Bituminous Pavement
Concrete Pavement
ROAD PLANNING AND ADMINISTRATION
HISTORY OF ROAD CONSTRUCTION