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This is an accepted version of this page This is the latest accepted revision, reviewed on 10 October 2024. Directionality of traffic flow by jurisdiction Countries by direction of road traffic, c. 2020 ⇅ Left-hand traffic ⇵ Right-hand traffic Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side and to the right side ...
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
The correlation between old age and driving has been a notable topic for many years. [1][2] In 2018, there were over 45 million licensed drivers in the United States over the age of 65—a 60% increase from 2000. [3] Driving is said to help older adults stay mobile and independent, but as their age increases the risk of potentially injuring ...
"Don't wear your eclipse glasses while driving," he said. You also shouldn't pull over on the side of the road to view the eclipse. Traffic is expected to be the worst immediately afterward, when ...
Not really. "Some people need glasses when they're young—before 45," explains , of Cleveland Clinic’s Cole Eye Institute. "If you don't need glasses before your 40s, chances are you will need ...
Color blindness or color vision deficiency (CVD) is the decreased ability to see color or differences in color. [2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
Keratoconus (KC) is a disorder of the eye that results in progressive thinning of the cornea. [3] This may result in blurry vision, double vision, nearsightedness, irregular astigmatism, [4] and light sensitivity leading to poor quality-of-life. [3][5] Usually both eyes are affected. [3] In more severe cases a scarring or a circle may be seen ...
The term "highway hypnosis" was coined by G. W. Williams in 1963. [4][6] Building on the theories of Ernest Hilgard (1986, 1992) that hypnosis is an altered state of awareness, some theorists hold that the consciousness can develop hypnotic dissociation. In highway hypnosis, one stream of consciousness drives the car while the other deals with ...