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  2. Rail speed limits in the United States - Wikipedia

    en.wikipedia.org/wiki/Rail_speed_limits_in_the...

    Texas Central Railway; 3 segments of the Northeast Corridor totaling 33.9 mi (54.6 km) in Rhode Island/Massachusetts [14] and an additional 16 mi (26 km) in New Jersey; Brightline West will have Class 8 trackage on its 218 mi (351 km) route between Rancho Cucamonga, California and Las Vegas, Nevada, going at top speeds of 186 mph (299 km/h).

  3. List of U.S. Class II railroads - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._Class_II...

    The Class I threshold is $250 million, adjusted for inflation since 1991. [2]). As of 2021 [update] , a Class II railroad in the United States has an operating revenue greater than $39.2 million but less than $489.9 million.

  4. Railroad classes - Wikipedia

    en.wikipedia.org/wiki/Railroad_classes

    The Class II maximum criterion was increased in 1992 to $250 million annually, which resulted in the Florida East Coast Railway having its status changed to Class II. The thresholds set in 1992 were: Class I: A carrier earning revenue greater than $250 million; Class II: A carrier earning revenue between $20 million and $250 million

  5. How To Tell If Your In The Zone 2 Cardio Threshold During ...

    www.aol.com/youre-probably-already-doing...

    24/7 Help. For premium support please call: ... How to calculate your Zone 2 cardio range: Lower threshold: 0.6 x (208 - age x 0.7) Upper threshold: 0.7 x ... BYU rolls over No. 23 Kansas in ...

  6. Runway - Wikipedia

    en.wikipedia.org/wiki/Runway

    While methods for identifying the relocated threshold vary, a common way for the relocated threshold to be marked is a ten-foot-wide white bar across the width of the runway. [ 31 ] Clearway is an area beyond the paved runway, aligned with the runway centerline and under the control of the airport authorities.

  7. Laser safety - Wikipedia

    en.wikipedia.org/wiki/Laser_safety

    Typically, the sale of laser pointers is restricted to either class 3A (<5 mW) or class 2 (<1 mW), depending on local regulations. For example, in the US, Canada and the UK, class 3A is the maximum permitted, unless a key actuated control or other safety features are provided. [31] In Australia, class 2 is the maximum allowed class. However ...

  8. Stop Living Paycheck to Paycheck by Doing This 1 Thing ... - AOL

    www.aol.com/finance/stop-living-paycheck...

    Survey methodology: GOBankingRates surveyed 1,006 Americans ages 18 and older across the country between Dec. 6 and Dec. 9, 2024, asking 24 different questions: (1) What is your preferred method ...

  9. Receiver operating characteristic - Wikipedia

    en.wikipedia.org/wiki/Receiver_operating...

    A classification model (classifier or diagnosis [7]) is a mapping of instances between certain classes/groups.Because the classifier or diagnosis result can be an arbitrary real value (continuous output), the classifier boundary between classes must be determined by a threshold value (for instance, to determine whether a person has hypertension based on a blood pressure measure).