Long term driving performance

Long distance driving epitomizes the ability of drivers to adapt to various levels of information input. Commercial drivers cover roads which vary over a wide range in the amount and frequency of stimuli presented. Practical considerations such as schedules, speed limits and limitations in equipment reduce the range of variation in actual speeds attained from that otherwise expected. Extremes in infomation load increase costs in terms of driver stresses, resulting in widespread use of drugs, occasional hallucinations or amnesias, and impatient or aggressive attitudes which increase the risk of accident involvement.