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Compare
Bus and Train |
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Compare two hypothetical
systems |
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CMT |
Light Rail |
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Cost per mile |
$1,400,000 |
$30,000,000 |
dollars [a] |
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$Million/Mile |
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Miles of Route |
100 |
14 |
miles |
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CMT |
1.4 |
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Total Cost |
$140 |
$420 |
million dollars, cost for just
route miles |
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Light Rail |
30.0 |
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New Riders |
40,000 |
6,000 |
estimated new riders |
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Miles |
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CMT |
100 |
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Average Miles |
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Light Rail |
14 |
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per rider per day |
24 |
16 |
miles |
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New Riders |
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Car Miles Displaced |
800,000 |
80,000 |
Reduction in car miles traveled per day. Assume 1.2 riders per car |
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CMT |
40 |
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Light Rail |
6 |
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Pounds CO2 avoided |
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Assume CMT fleet
average emissions are 30 |
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per 100 car miles |
53 |
73 |
pounds CO2 per 100 passenger
miles |
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Assume train emits 0 pounds per 100 passenger miles [c] |
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Car Miles Displaced |
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CMT |
800 |
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Total Reduction in CO2 |
424,000 |
58,400 |
pounds CO2 per day |
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Light Rail |
80 |
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Total Reduction in CO2 |
106.0 |
14.6 |
millions of pounds of CO2 per year |
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Pounds CO2 Avoided |
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per year |
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CMT |
53 |
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Rider Cost Savings |
$160,000,000 |
$24,000,000 |
Each
rider saves $4000 a year by not having to drive a car. |
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Light Rail |
73 |
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Return to previous page
by using the back button on your browser. |
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Total CO2 REDUX |
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CMT |
106.0 |
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[a]
The express bus route would have about one queue jumper per mile |
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Light Rail |
14.6 |
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27 Transit centers at $ 88 million
works out to $900,000 million per mile |
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$900,000 per mile for TCs plus $
500,000 for QJs = $ 1.4 million per mile of express bus route |
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Rider Cost Savings |
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CMT |
$160 |
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[c] The train is either diesel or electric. If
electric then consider that most electricity in the metro area comes from
burning fossil fuel. |
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Light Rail |
$24 |
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See the last graph on this page : |
But for this chart I assume the
train emits 0 CO2 directly or indirectly |
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BTU per Passenger Mile and Vehicle Mile |
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for
BTU per Light Rail Passenger mile. I used the a low value of 3000. The median
value is 4400. |
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53 equals 73 ( for the car ) - 20
for CMT |
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73 equals 73 (car) - 0 for light
rail |
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How
many could be expected to ride a light rail system with only 14 miles ? |
56000 |
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14 sq miles of city times 4000
residents per sq mile = 56,000 residents |
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half of residents go to work and
only 20% go to work downtown |
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56,000 * (1/2) * 20% = |
5600 |
expected riders of an 14 mile light
rail |
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