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Friends Select School (FSS) is a college-preparatory, Quaker school for pre-kindergarten through 12th grade located at 1651 Benjamin Franklin Parkway at the intersection of Cherry and N. 17th Streets in Center City Philadelphia. Quaker education in Philadelphia dates back to 1689. Friends Select, which was founded in 1833, has been located on ...
Theorem: In PG(2,q) with q even, there exists a projective triad of side (q + 2)/2 which is a blocking set of size (3q + 2)/2. [3] The construction is similar to the above, but since the field is of characteristic 2, squares and non-squares need to be replaced by elements of absolute trace 0 and absolute trace 1. Specifically, let C = (0,0,1).
Each indicated airport has an airport data block associated with it. The block may contain just the name, altitude and runway length, or any of the following additional information, among others. Part-time tower operation (a star symbol). FSS, ATIS/AWOS, CTAF indicators; Control tower, ATIS, UNICOM frequencies, as available; Right traffic ...
A box junction in London, pictured from atop the Monument in 1969. A box junction is a road traffic control measure designed to prevent congestion and gridlock at junctions.The surface of the junction is typically marked with a yellow criss-cross grid of diagonal painted lines (or only two lines crossing each other in the box), and vehicles may not enter the area so marked unless their exit ...
Question: I recently ran into a horde of motorcyclists, and by horde I’m talking 50 to 60. At cross streets, one motorcycle would block the intersection and the rest would drive through. Red ...
Gridlock on a network of two-way streets. The red cars are those causing the gridlock by stopping in the middle of the intersection. Gridlock is a form of traffic congestion where continuous queues of vehicles block an entire network of intersecting streets, bringing traffic in all directions to a complete standstill.
In some jurisdictions (such as New York City), [citation needed] there are ordinances or by-laws against "gridlocking".A motorist entering an intersection (even if on a green light) but unable to proceed and who gets stranded in the intersection (when traffic ahead fails to proceed), and who remains after the light turns red (thus blocking traffic from other directions) may be cited.
In some cases stop or yield lines are used in advance of mid-block crosswalks. A stop line is a type of marking used to inform drivers of the point where they are required to stop at an intersection or roundabout controlled by a stop sign or traffic signal. It is also known as a stop bar. [2]