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  2. Following distance - Wikipedia

    en.wikipedia.org/wiki/Following_distance

    For heavy duty commercial vehicles it is recommended 4-6 seconds following distance for speeds under 30 mi/h (48 km/h), and 6-8 seconds following distance for speeds over 30 mi/h (48 km/h). [9] Rear-end collisions are the number one type of traffic collisions .

  3. Bridge Base Basic - Wikipedia

    en.wikipedia.org/wiki/Bridge_Base_Basic

    minimum opening hands with 13 to 15 HCP; medium opening hands with 16 to 18 HCP; maximum opening hands with 19 to 21 HCP; For unbalanced hands with 22+ points: show a very strong opening hand by using the strong 2 ♣ convention. For balanced hands, open with a no-trump bid when you can limit your hand to the following point ranges: 15 to 17 ...

  4. Shot clock - Wikipedia

    en.wikipedia.org/wiki/Shot_clock

    The NCAA introduced a 45-second shot clock for the 1985-86 season; [13] several conferences had experimented with it for the two seasons prior. [14] It was reduced to 35 seconds in the 1993–94 season, [15] and 30 seconds in the 2015–16 season. [16] The NAIA also reduced the shot clock to 30 seconds starting in 2015–16. [17]

  5. Assured clear distance ahead - Wikipedia

    en.wikipedia.org/wiki/Assured_Clear_Distance_Ahead

    The rule is the specific spatial case of the common law basic speed rule, [13] and an application of volenti non fit injuria. The two-second rule may be the limiting factor governing the ACDA, when the speed of forward traffic is what limits the basic safe speed, and a primary hazard of collision could result from following any closer. [2] [3]

  6. Formula One regulations - Wikipedia

    en.wikipedia.org/wiki/Formula_One_regulations

    The nosebox must withstand 40 kN (9,000 lb f) for 30 seconds without failing. [4] Onboard electrical and computer systems, once inspected at the start of the season, may not be changed without prior approval. Electronic starters and launch control are forbidden. [citation needed] The computers must contain a telemetric accident data reporting ...

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Rifleman's rule - Wikipedia

    en.wikipedia.org/wiki/Rifleman's_rule

    Rifleman's rule is a "rule of thumb" that allows a rifleman to accurately fire a rifle that has been calibrated for horizontal targets at uphill or downhill targets. The rule says that only the horizontal range should be considered when adjusting a sight or performing hold-over in order to account for bullet drop.

  9. See a teacher's brilliant '30 seconds or less' kindness rule ...

    www.aol.com/news/see-teachers-brilliant-30...

    A Minnesota teacher’s lesson on kindness is going viral. Natalie Ringold calls it the “30 seconds or less” concept and it’s meant to demonstrate the power of words.