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  2. Long-distance calling - Wikipedia

    en.wikipedia.org/wiki/Long-distance_calling

    Interstate long-distance or inter-LATA interstate long-distance, the most common group, is the one for which long-distance carriers are usually chosen by telephone customers. Another form of long-distance call, increasingly relevant to more U.S. states, is known as an inter-LATA intrastate long-distance call. This refers to a calling area ...

  3. Transportation safety in the United States - Wikipedia

    en.wikipedia.org/wiki/Transportation_safety_in...

    The number of deaths per passenger-mile on commercial airlines in the United States between 2000 and 2010 was about 0.2 deaths per 10 billion passenger-miles, [96] [97] while for driving, the rate was 1.5 per 100 million vehicle-miles for 2000, which is 150 deaths per 10 billion miles for comparison with the air travel rate. [16] [98] [99] [100]

  4. L-carrier - Wikipedia

    en.wikipedia.org/wiki/L-carrier

    The first production installation of the L-1 carrier system went into service between Stevens Point, Wisconsin and Minneapolis, Minnesota in 1941 over a distance of almost 200 miles (320 km). [3] with a capacity of 480 channels, far more than could be carried by balanced pair carrier systems, and cheaper per channel for high-usage routes.

  5. Railroads and regulators must address the dangers of long ...

    www.aol.com/railroads-regulators-must-address...

    (1.76 miles long) But the National Transportation Safety Board determined that derailment was caused by an overheating bearing that wasn't caught in time by trackside sensors — not its length.

  6. Microwave transmission - Wikipedia

    en.wikipedia.org/wiki/Microwave_transmission

    After the war, telephone companies used this technology to build large microwave radio relay networks to carry long-distance telephone calls. During the 1950s a unit of the US telephone carrier, AT&T Long Lines , built a transcontinental system of microwave relay links across the US which grew to carry the majority of US long distance telephone ...

  7. North American Numbering Plan expansion - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering...

    In NANP telephone number specifications, the letter N represents a numeral from 2 through 9, while the letter X represents any numeral. Thus, NXX is a number from 200 through 999, while XXXX is a range from 0000 through 9999. The first three digits of a telephone number are the numbering plan area code (NPA code, or simply NPA).

  8. Network length (transport) - Wikipedia

    en.wikipedia.org/wiki/Network_length_(transport)

    The route length of a transport network is the sum of the lengths of all routes in the network, [5] such as railways, road sections or air sectors.The U.S. Department of Transportation's Federal Transit Administration has also referred to this as "Directional Route Miles (DRM)". [6]

  9. Race season is here: Here are the costs (literally and ... - AOL

    www.aol.com/finance/race-season-costs-literally...

    Long-distance running can be costly in terms of time too. In the thick of marathon training, plans include around six to eight hours of running each week. This increases to 10 hours per week for ...