par Rapide 424
04 Nov 2010, 20:48
Wikipedia sur les bandes jaunes/blanches US:
(En gros --Blanches : bandes de separation dans la meme direction sur autoroute. Jaunes : separant circulations inverses, simples, doubles ou pointillees.)
United States
Generally white lane markings indicate a separation between lanes traveling in the same direction while yellow markings indicate opposing traffic on the other side of the line. In some areas, such as Colorado, black material is applied on the surface before a shorter white line is painted. This improves the contrast of the marking against "white" concrete.
In California, Botts' dots are commonly used to mark lanes on most freeways. A large number of California cities also use Botts' dots on some (or all) major arterials. The notable exception is the city of Los Angeles, which cannot afford to maintain any raised lane markers due to its fiscal problems, and uses only paint.[citation needed]
In California and Nevada, the reflectors when present are usually the lines, and no paint is used for additional markings. Exceptions include: freeways built from white concrete where painted stripes are added to make the lanes more visible through sun glare, freeways built so wide that the risk of drifting is minimal (e.g., Interstate 5 in the Central Valley), and freeways in areas where it snows in the winter (since the snowplows would scrape off the Botts' Dots).
In general, single broken lines mean passing is allowed, single solid lines mean pass only to avoid a hazard, and double solid lines mean it is prohibited, as it often is in tunnels. On two-lane roads, a single broken centerline means that passing is allowed in either direction, a double solid centerline means passing is prohibited in both directions, and the combination of a solid line with a broken line means that passing is allowed only from the side with the broken line and prohibited from the side with the solid line.