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  2. Danish pile-driving formula - Wikipedia

    en.wikipedia.org/wiki/Danish_pile-driving_formula

    Q dy = ultimate dynamic bearing capacity of driven pile. α = pile driving hammer efficiency. W H = weight of hammer. H = hammer drop. S = inelastic set of piles, in distance pr. hammer blow. S e = elastic set of piles, in distance pr. hammer blow. L = pile length. A = pile end area. E = modulus of elasticity of pile material.

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  4. Driver's licenses in the United States - Wikipedia

    en.wikipedia.org/wiki/Driver's_licenses_in_the...

    Learner must reach age 16, hold permit for six months, and log 50 hours of practice driving. For the first six months, no driving with any passengers who are under 20 years old who are not members of the learner's immediate family. For the first year, no driving between 1 a.m. and 5 a.m. unless with a licensed driver age 25 or older. After two ...

  5. Uber self-driving cars back on public roads, but in manual mode

    techcrunch.com/2018/07/24/uber-self-driving-cars...

    Uber is putting its autonomous vehicles back on Pittsburgh’s city streets, four months after a fatal accident involving one of its self-driving cars prompted the ride-hailing company to halt ...

  6. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or other status ...

  7. Traffic law in the United States - Wikipedia

    en.wikipedia.org/wiki/Traffic_law_in_the_United...

    Traffic law in the United States. For driving in the United States, each state and territory has its own traffic code or rules of the road, although most of the rules of the road are similar for the purpose of uniformity, given that all states grant reciprocal driving privileges (and penalties) to each other's licensed drivers.

  8. Defensive driving - Wikipedia

    en.wikipedia.org/wiki/Defensive_driving

    Defensive driving describes the practice of anticipating dangerous situations, despite adverse conditions or the mistakes of others when operating a motor vehicle. [ 1 ] [ a ] It can be achieved by adhering to general guidelines, such as keeping a two- or three-second gap between the driver's vehicle and the vehicle in front to ensure adequate ...

  9. Test-driven development - Wikipedia

    en.wikipedia.org/wiki/Test-driven_development

    v. t. e. Test-driven development ( TDD) is a way of writing code that involves writing an automated unit-level test case that fails, then writing just enough code to make the test pass, then refactoring both the test code and the production code, then repeating with another new test case. Alternative approaches to writing automated tests is to ...