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	<title>Comments on: Systems doomed to fail: ULTra mass transit</title>
	<atom:link href="http://brucefwebster.com/2008/12/29/systems-doomed-to-fail-ultra-mass-transit/feed/" rel="self" type="application/rss+xml" />
	<link>http://brucefwebster.com/2008/12/29/systems-doomed-to-fail-ultra-mass-transit/</link>
	<description>Making IT work since 1974.</description>
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		<title>By: pmuller</title>
		<link>http://brucefwebster.com/2008/12/29/systems-doomed-to-fail-ultra-mass-transit/comment-page-1/#comment-146</link>
		<dc:creator>pmuller</dc:creator>
		<pubDate>Fri, 23 Jan 2009 23:45:10 +0000</pubDate>
		<guid isPermaLink="false">http://brucefwebster.com/?p=87#comment-146</guid>
		<description>Bruce, you have obviously given this some thought, but I am afraid you are missing the mark in many places.

No room for infrastructure - a PRT guideway is 7&#039; wide and carries same traffic as a freeway lane at 12&#039; or 4 city streets at 48&#039;.

Last mile- PRT is designed to have stations on a 1/2 mile grid - average 1/4 mile max walk.

Pay as you go - PRT operating costs are typically LESS than fare box revenues.

Hidden costs - PRT uses less than 1/3rd energy per passenger mile of cars, buses and trains and requires much less infrastructure.

Scalability - PRT scales easily to city-wide.

Coordination - this is where modern computer technology helps out. PRT requires much less empty vehicle movement than conventional transit.

Safety - the antiquated Morgantown &quot;PRT&quot; has done over 140 million injury-free passenger miles - regular transit would have injured over a hundred and probably killed someone in that many miles. PRT will be (already is) two orders of magnitude safer than cars.

I agree that PRT will start in niche markets but as speeds increase and headways (time between vehicles) reduce, it will expand throughout cities. Masdar in the UAE is being built to be totally reliant on an 80 station PRT system with thousands of vehicles.

Visit our website www.prtconsulting.com to learn more about PRT.</description>
		<content:encoded><![CDATA[<p>Bruce, you have obviously given this some thought, but I am afraid you are missing the mark in many places.</p>
<p>No room for infrastructure &#8211; a PRT guideway is 7&#8242; wide and carries same traffic as a freeway lane at 12&#8242; or 4 city streets at 48&#8242;.</p>
<p>Last mile- PRT is designed to have stations on a 1/2 mile grid &#8211; average 1/4 mile max walk.</p>
<p>Pay as you go &#8211; PRT operating costs are typically LESS than fare box revenues.</p>
<p>Hidden costs &#8211; PRT uses less than 1/3rd energy per passenger mile of cars, buses and trains and requires much less infrastructure.</p>
<p>Scalability &#8211; PRT scales easily to city-wide.</p>
<p>Coordination &#8211; this is where modern computer technology helps out. PRT requires much less empty vehicle movement than conventional transit.</p>
<p>Safety &#8211; the antiquated Morgantown &#8220;PRT&#8221; has done over 140 million injury-free passenger miles &#8211; regular transit would have injured over a hundred and probably killed someone in that many miles. PRT will be (already is) two orders of magnitude safer than cars.</p>
<p>I agree that PRT will start in niche markets but as speeds increase and headways (time between vehicles) reduce, it will expand throughout cities. Masdar in the UAE is being built to be totally reliant on an 80 station PRT system with thousands of vehicles.</p>
<p>Visit our website <a href="http://www.prtconsulting.com" rel="nofollow">http://www.prtconsulting.com</a> to learn more about PRT.</p>
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