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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

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

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


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Customer Feedback

Consumers have increasingly become part of the team that shapes the products that are designed and built—especially since the 1960s and 1970s. The company maintains a press fleet so automotive correspondents can test drive new models and review them. In some companies, top executives also test drive new cars and give their feedback. Focus groups of consumers are organized to test recent innovations to see if they would be suitable to apply across a product line. For example, focus groups of consumers who like off-road operation provided the initial market test of four-wheel drive passenger cars. Other consumer groups have road tested innovations such as fuel injection, turbocharging, and trip computers. After these focus groups give their feedback, designers refine the innovations and introduce them into other vehicles.

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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

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