Final answer:
The discussion revolves around Bus Rapid Transit (BRT) systems and the concept of economies of scale in urban transit. It also touches on why intercity bus companies might prefer a narrower market definition to reduce regulatory scrutiny, and the use of wired systems in public transport to enhance efficiency.
Step-by-step explanation:
The subject refers to a type of urban transit system known as Bus Rapid Transit (BRT). BRT systems emphasize high efficiency and are similar to rail systems in operation, utilizing exclusive bus lanes or other transit rights-of-way to offer the flexibility of buses without the expense associated with constructing rail infrastructure. Economies of scale, a term common in the business and economics fields, suggests that as the quantity of service increases—in this case, the number of riders—the average cost of service provision tends to decrease. This principle is particularly evident in mass transit systems where fixed costs are spread over a larger number of passengers.
Regarding the specific question about intercity bus companies such as Greyhound Lines and Trailways Transportation System, the companies likely preferred the narrower definition of "the market for intercity bus service." By defining the market in this way, they would face less scrutiny under antitrust laws, as the market would appear more competitive when not considering alternative forms of transportation like personal cars, car rentals, passenger trains, and commuter air flights, all of which serve the broader "market for intercity transportation."
Lastly, the reference to wired systems describes how some urban transit systems, such as light rail and trolley buses, can operate without on-board batteries by drawing power from overhead wires or a third rail, thereby improving the efficiency of the system and reducing the reliance on battery-based vehicles.