The latter arrangement is termed the "pre-timed Maximum Facility". The "Maximum Traffic Green Timer" is started either when the pedestrian push button is pressed or when the traffic signals first turn green after the previous pedestrian phase. the detectors indicate that a pedestrian is still waiting to cross.the "Maximum Traffic Green Timer" has expired.the pedestrian push button has been pressed since the end of the last pedestrian phase.The pedestrian phase will start at the moment all three of these conditions are fulfilled: Unlike the pelican crossing, there is no transitional "flashing" phase. An on-crossing detector ensures that the signal for vehicles remains red until pedestrians have finished crossing (within practical limits). This is so traffic is not halted unnecessarily. Should the pedestrian cross prematurely, walk away from the crossing, or wait outside the detection area, the pedestrian's request to cross could be automatically cancelled. This feature is to assist visually impaired people who struggle to see the light change.Īfter a request to cross (by button press), a kerb side detector monitors the pedestrian's presence at the crossing. Some push-button units (the lower box in the image) are also fitted with a tactile knob under the unit which rotates when the user may cross. A second reason for the design is that having the lights closer to the user assists visually impaired people who could have difficulty viewing the signal from across the carriageway. This allows the pedestrian to monitor passing traffic while waiting for the signal to cross. Unlike the older pelican crossing designs, where the pedestrian signal lights are mounted on the opposite side of the road, the puffin crossing has them mounted at the near road side, set diagonally to the road edge. If a pedestrian presses the button but then walks off, the PKD will cancel the request making the lights more efficient. These sensors detect if pedestrians are crossing slowly and can hold the red traffic light longer if needed. They have two sensors on top of the traffic lights (PCD – pedestrian crossing detector, and PKD – pedestrian kerb detector). From 2016, pelican crossings began to be phased out in the United Kingdom, to be replaced with puffin crossings. The design is distinct from the older pelican crossing in that the lights signalling to the pedestrians are on the same side of the road as the pedestrian, rather than across the road. Yeats Volume III AutobiographiesA puffin crossing (its name derived from the phrase " pedestrian user- friendly intelligent" ) is a type of pedestrian crossing in use in the United Kingdom. Once I smelled new-mown hay when we were quite a long way from land, and once when I was watching the sea-parrots as the sailors call the puffin I noticed they had different ways of tucking their heads under their wings, or I fancied it, and said to the captain, ‘They have different characters’.Ĭollected Works of W. Given the frequent Arctic references it the article should be referred to as a puffin piece.īoston Globe on Ray Bradley « Climate Audit
#Puffin definition cracked#
That's why the cost of adopting a cute little puffin is the same as adopting larger, perhaps less cute, animals.Īt its most bad ass, “Puffin” brings cheesepuffs to mind yes, I know a puffin is a bird.Ģ010: All the Future is Cracked Up to Be? - Pink (Plush animals, among which the puffin is the cutest, come with a $50 donation and up.)
noun Any of several seabirds of the genus Fratercula of northern regions, characteristically having black-and-white plumage and a vertically flattened, triangular bill that is brightly colored during breeding season.From The American Heritage® Dictionary of the English Language, 5th Edition.
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