methamphetamine hydrochloride is a white to light brown crystalline powder, or clear chunky crystals resembling ice. the majority of street methamphetamine is produced in clandestine laboratories. the drug manufacturer states that patients should be informed that methamphetamine and amphetamine may impair the ability to engage in potentially hazardous activities such as driving a motor vehicle....

Cannabis use has increased considerably during the last 15 years. One of the major problems dealing with cannabis use is driving under the influence of drugs. With the exception of ethyl alcohol, the majority of the epidemiological studies have shown that cannabis is the most frequently detected substance in people suspected of driving under the influence of drugs. Experimental studies are ther...

This study investigates how visual impairment affects driving performance and whether this can be predicted by visual testin! in a clinic. Visual impairment [cataracts, visual field restriction and monocular vision) was simulated for a group of young normal subjects. Driving performance was assessed (on a closed road circuit) by measuring peripheral awareness, manoeuvring, reversing, reaction t...

people with alzheimer disease (ad) have decreases in brain cell function that may increase their risks as drivers. the changes in brain cells affect memory (at first, short-term memory and then much later, long-term memory) and other thinking functions. in addition, people with early ad, though often very functional in many areas of life, may not be as competent behind the wheel of a car as tho...

music has been used as mood modulator by humans for many years. nowadays music is mostly play as one of the switch in a car. although music listening is common at during driving. its impact on driving performance has developed debates and controversies. studies have shown that self-selected in-car music listening can improve driver’s mood and behavior. however other studies have reported that b...

driving is a complex psychomotor task involving distinct cognitive, perceptual and decision making skills. it needs to more concentration and alertness to driving safe. several studies have shown the potential effects of alcohol in crash production by epidemiological and laboratory analysis. alcohol is obviously the most common single cause of traffic accidents in america. a review of the relat...

A large body of evidence on traffic accidents indicates that distracted driving is a major cause accidents. To investigate the relationship between driver performance in both normal and states to discriminate which state based performance, simulator was used simulate drivers an urban road environment, distraction task designed motivate enter cognitive state. Data were collected from 80 each two...