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...el Kjær 2225.jpg|thumb|130px|right|[[Sound level meter]] used in measuring noise]] ...the USA it contributes more to environmental noise exposure than any other noise source, and is constituted chiefly of [[engine]], [[tire]], [[aerodynamic]]

...or ongoing leaks of gasoline pose a threat to the [[public health|public's health]] and the environment, should the gasoline reach a public supply of [[drink ...d contains only 5% [[aromatics]] (unlike the usual 25%) which inhibits the effects of inhalation.

...the muffling effect it has on the exhaust note helps keep the cars inside noise-limits. ...ed on the Chaparral Champ Car in [[1979 in sports|1979]]. F1 banned ground effects for safety reasons in [[1982 in sports|1982]].

...had complex drivetrains and achieved relatively slow starting speeds, with effects reminiscent of "[[turbo lag]]", but demonstrated that turbines could be use ...xample, people who are blind or visually-impaired, and who rely on vehicle-noise while crossing streets, find it much more difficult to do safely.

...] are frequently also mandatory. Since a moving bicycle makes very little noise, in many countries bicycles must have a warning bell for use when approachi ...in life, and which she named "Gladys", for its "gladdening effect" on her health and political optimism. Willard used a cycling metaphor to urge other suff