Details
The name is derived from PELICON, a portmanteau of pedestrian light controlled. The term Pelican crossing originated in the United Kingdom, but similar traffic control devices are in use throughout the world. The term is also used in the Republic of Ireland.
The pelican crossing was a relatively minor development of the X-way crossing. This earlier crossing was largely identical to the pelican crossing, but instead of a green light for motorists, featured a white diagonal cross. The intention of this was to distinguish the crossing lights from any nearby junction (standard) traffic lights). The white cross was widely criticised and users and motoring organisations alike called for the white cross to be replaced by a green light. With some changes to the light timings and road markings, the X-way crossing became the pelican crossing.
The Pelican crossing was the first definitive light controlled crossing for pedestrians in the UK, introduced in 1969, after the earlier failed experiment of the panda crossing. Previously only zebra crossings had been used, which have warning signals (Belisha beacons), but no control signals. The pedestrian lights are situated on the far side of the road to the pedestrian. A puffin crossing has the lights on the same side as the pedestrian; a toucan crossing is a crossing for pedestrians and bicycles; a pegasus crossing allows horse-riders to cross as well.
Additionally, a Pelican crossing, as distinct from a puffin crossing, has the special feature that while the green man flashes to indicate that pedestrians may continue crossing but may not start to cross, the red light changes to an amber flashing light permitting cars to pass if there are no further pedestrians. This reduces the delay to traffic.
In UK law, Pelican crossings which go straight across the road are one crossing, even when there is a central island, therefore traffic must wait for pedestrians who are crossing from the other side of the island. This rule is different to similar standard pedestrian crossings where each portion of the crossing is treated as a separate crossing. However, at installations where the crossings that cross each carriageway are separate crossings, then they are staggered.
Read more about this topic: Pelican Crossing
Famous quotes containing the word details:
“Different persons growing up in the same language are like different bushes trimmed and trained to take the shape of identical elephants. The anatomical details of twigs and branches will fulfill the elephantine form differently from bush to bush, but the overall outward results are alike.”
—Willard Van Orman Quine (b. 1908)
“If my sons are to become the kind of men our daughters would be pleased to live among, attention to domestic details is critical. The hostilities that arise over housework...are crushing the daughters of my generation....Change takes time, but mens continued obliviousness to home responsibilities is causing women everywhere to expire of trivialities.”
—Mary Kay Blakely (20th century)
“There was a time when the average reader read a novel simply for the moral he could get out of it, and however naïve that may have been, it was a good deal less naïve than some of the limited objectives he has now. Today novels are considered to be entirely concerned with the social or economic or psychological forces that they will by necessity exhibit, or with those details of daily life that are for the good novelist only means to some deeper end.”
—Flannery OConnor (19251964)