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One of the leading causes of crashes is distracted driving, officials say. Start the day smarter. Get all the news you need in your inbox each morning. In , there were over 23, crashes involving a distracted driver in Tennessee, according to Hands Free Tennessee. That's an average of 65 crashes per day. Distracted driving, or engaging in activities while driving that are not driving-related and divert attention away from the road, can be classified one of three ways — cognitive, visual and manual. And though many may report using makeup, shaving or talking on the phone while behind the wheel, officials recommend tools that help alleviate distracted driving like using a hands-free device. Leaving yourself ample time to arrive at your destination, setting your GPS in advance and eating beforehand are other recommended tools that when planning ahead can help prevent distracted driving. If the driver must engage in activities that are not driving-related, officials urge the public to pull over. What Are The Advantages Of Having A Drivers EdWhat Are The Advantages Of Having A Drivers Ed - that can
The United States House of Representatives passed the bill on December 13, voting —41 , [8] and the United States Senate passed it on December 18, voting 87— Provisions of the act[ edit ] No Child Left Behind requires all public schools receiving federal funding to administer a nationwide standardized test annually to all students. If the school's results are repeatedly poor, then steps are taken to improve the school. Students have the option to transfer to a higher performing school within the school district, if any exists. Missing AYP in the third year forces the school to offer free tutoring and other supplemental education services to students who are struggling. If a school misses its AYP target for a fourth consecutive year, the school is labelled as requiring "corrective action," which might involve wholesale replacement of staff, introduction of a new curriculum, or extending the amount of time students spend in class.What Are The Advantages Of Having A Drivers Ed Video
Online Driver's ED: Why Try ItThe theoretical understanding and application date from the s, and they are implemented in nearly all analog control systems; originally in mechanical controllers, and then using discrete electronics and latterly in industrial process computers.
Sequential control and logical sequence or system state control[ edit ] Main article: Programmable logic controller Sequential Havign may be either to a fixed sequence or to a logical one that will perform different actions depending on various system states.
An example of an adjustable but otherwise fixed sequence is a timer on a lawn sprinkler. States refer to the various conditions that can occur in a use or sequence scenario of the system. An example is an elevator, which uses logic based on the system state to perform certain actions in response to its state and operator input. For example, if the operator presses the floor n button, the system will respond depending on whether the elevator is stopped or moving, going up or down, or if the door is open or closed, and Es conditions.
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Relays were first used in telegraph networks before being developed for controlling other devices, such as when starting and stopping industrial-sized electric motors or opening and closing solenoid valves. Using relays for control purposes allowed event-driven control, where actions could be triggered out of sequence, in response to external events.
These were more flexible in their response than the rigid single-sequence cam timers.
More complicated examples involved maintaining safe sequences for devices such as swing bridge controls, where a lock bolt needed to be disengaged before the bridge could be moved, and the lock bolt could not be http://pinsoftek.com/wp-content/custom/stamps/colorism-vs-racial-discrimination.php until the safety gates had already been closed. The total number of relays and cam timers can number into the hundreds or even thousands in some factories. Early programming techniques and languages were needed to make such systems manageable, one of the first being ladder logicwhere diagrams of the interconnected relays resembled the rungs of a ladder.
Special computers called programmable logic controllers were later designed to replace these collections of hardware with a single, more easily re-programmed unit. In a typical hard wired motor start and stop circuit called a control circuit a motor is started by pushing a "Start" or "Run" button that activates a pair of electrical relays.
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The "lock-in" relay locks in contacts that keep the control circuit energized when the push-button is released. The start button is a normally open contact Whta the stop button is normally closed contact. Another relay energizes a switch that powers the device that throws the motor starter switch three sets of contacts for three-phase industrial power in the main power circuit. Large motors use high voltage and experience high in-rush current, making speed important in making and breaking contact.
This Drivegs be dangerous for personnel and property with manual switches. The "lock-in" contacts in the start circuit and the main power contacts for the motor are held engaged by their respective electromagnets until a "stop" or "off" button is pressed, which de-energizes the lock in relay. Suppose that the motor in the example is powering machinery that has a critical need for lubrication.]
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