“…For vegetation the levels were Pb,350;Cu,30;Ni,3.7 and Cr,4. The possible hazards arising from pollution of the environment by heavy metals have surfaced more recently, and the toxicity of some of these metals toward humans especially children when exposed to them from the atmosphere, water or food has been well documented (Browning, 1969;World Health Organisation, 1972;Page and Bingham, 1973;Mahaffey, 1977;Smith, 1994). Vehicle exhausts, as well as several industrial activities, emit these heavy metals (Lagerwerff and Specht, 1970;Solomon and Hartford, 1976;Bower et al, 1978;Reeves and Brooks, 1983;Turer, 2005;Guan Dong-sheng and Pert, 2006) so that soils, plants and residents along roads with heavy traffic loads are subjected to increasing levels of contamination with heavy metals (Welch and Dick, 1975;Harve and Underdal, 1976;Ward et al, 1977;Harrison et al, 1981;Ho and Tai, 1988;Jaradat and Moman, 1999;Delmas et al, 2002;Bhargava and Gupta, 2003) Although substantial work has been carried out in Europe and the United States on lead distribution with distance from roads, and the trends expected are well established, so far as we are aware data for other metals is more restricted, and there are no previous studies of this type from Libya.…”