Comparison With Light Rail
In contrast with light rail transit systems, vehicles on modern streetcar systems such as the Portland Streetcar are rarely separated from other traffic and are not given traffic-signal priority over other vehicles, except in a few situations to allow the rail cars—which cannot turn as sharply as other most motor vehicles—to make some turns. In Portland, using this "mixed traffic" operation has reduced the cost of constructing each segment and—by not closing traffic lanes permanently to other traffic, as is typically done with light rail—also minimized disruption to traffic flow, and allowed curbside parking to be retained, but also means slower operating speeds compared to light rail. Additional factors making the Portland Streetcar line less expensive to build per mile than light rail are that use of city streets largely eliminated the need to acquire private property for portions of the right-of-way, as has been necessary for the region's light rail (MAX) lines, and that the vehicles' smaller size and therefore lighter weight has enabled the use of a "shallower track slab". The latter means that construction of the trackway necessitated excavating to a depth of only 12.2 inches (310 mm) instead of the conventional (for light rail) depth of around 18.3 inches (460 mm), significantly reducing the extent to which previously existing underground utilities had to be relocated to accommodate the trackway.
Read more about this topic: Portland Streetcar
Famous quotes containing the words comparison with, comparison, light and/or rail:
“In everyone’s youthful dreams, philosophy is still vaguely but inseparably, and with singular truth, associated with the East, nor do after years discover its local habitation in the Western world. In comparison with the philosophers of the East, we may say that modern Europe has yet given birth to none.”
—Henry David Thoreau (1817–1862)
“The comparison between Coleridge and Johnson is obvious in so far as each held sway chiefly by the power of his tongue. The difference between their methods is so marked that it is tempting, but also unnecessary, to judge one to be inferior to the other. Johnson was robust, combative, and concrete; Coleridge was the opposite. The contrast was perhaps in his mind when he said of Johnson: “his bow-wow manner must have had a good deal to do with the effect produced.””
—Virginia Woolf (1882–1941)
“O he did whistle and she did sing,
And all the bells on earth did ring
For joy our Saviour Christ was born
On Christmas Day in the morning.”
—Unknown. As I Sat on a Sunny Bank. . .
Oxford Book of Light Verse, The. W. H. Auden, ed. (1938)
“If goodness were only a theory, it were a pity it should be lost to the world. There are a number of things, the idea of which is a clear gain to the mind. Let people, for instance, rail at friendship, genius, freedom, as long as they will—the very names of these despised qualities are better than anything else that could be substituted for them, and embalm even the most envenomed satire against them.”
—William Hazlitt (1778–1830)