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A blind spot in a vehicle is an area around the vehicle that cannot be directly observed by the driver while at the controls, under existing circumstances. Blind spots exist in a wide range of vehicles: cars, trucks, motorboats, sailboats. and aircraft. Other types of transport have no blind spots at all, such as bicycles, motorcycles and horses. Proper adjustment of mirrors and use of other technical solutions can eliminate or alleviate vehicle blind spots. In transport, driver visibility is the maximum distance at which the driver of a vehicle can see and identify prominent objects around the vehicle.〔(Fasimod )〕 Visibility is primarily determined by weather conditions (see visibility) and by a vehicle's design. The parts of a vehicle that influence visibility include the windshield, the dashboard and the pillars. Good driver visibility is essential to safe road traffic. Blind spots may occur in the front of the driver when the A-pillar (also called the windshield pillar), side-view mirror, and interior rear-view mirror block a driver's view of the road. Behind the driver, there are additional pillars, headrests, passengers, and cargo, that may reduce visibility. ==Adjusting mirrors to end side blind spots== If side view mirrors are properly adjusted in a car, there are no blind spots on the sides.〔〔(【引用サイトリンク】title=How To Eliminate The Dreaded "Blind Spot" ), which includes good illustrations of vision zones involved in proper adjustment.〕〔 Such an arrangement can greatly reduce the probability of side swipes and other accidents, particularly in lane changes. This method was first revealed by George Platzer in a 1995 paper presented to the Society of Automotive Engineers.〔〔 The method is frequently overlooked in driver's education classes, and takes some getting used to.〔〔 Calculated elimination of blind spots by properly trained drivers is cheap, and obviates the need for expensive technological solutions to that problem, provided drivers take the time to set up and use their mirrors effectively.〔 The arrangement pointing the side view mirrors substantially outboard in a fixed mechanical formula is relatively simple to achieve, but it takes some knowledgeable effort. It is reputed to be a lifesaver.〔〔〔〔〔 However, one source considers that method a driving mistake and claims it to be even more dangerous, because it creates other blind spots directly behind the vehiclehe lists nine reasons, ''e.g.'', when backing upwhich are impossible to eliminate by a "shoulder check". Of course, rearward invisibility is an entirely different matter. The area directly behind vehicles is the source of Back-up collisions, particularly involving pedestrians, children and objects directly aft of a vehicle. That area has been called a "killing zone."〔 These problems are the object of a number of technological solutions, including (in rough order of technological complexity, simplest first): rear-view mirror, side-view mirror. fresnel lens, sonar, parking sensors and backup camera. A similar problem attaches to positions left and right of a vehicles' rear bumper as the driver attempts to back out of a parking space. Specially designed cross traffic alert warning systems have been developed.〔〔(Automobile Blind-Spot Monitoring System, Tri-City Insurance News, January 27, 2006 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blind spot (vehicle)」の詳細全文を読む スポンサード リンク
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