Lots of confusion about the new railroad stimulus funding. $8 B is not much for "building" new systems, it will just barely pay for some of the necessary studies. The administration wants action fast, so funding is only for new projects within 18 months or so; new systems will take 8-15 years to build, and $8 B will maybe cover 300 miles! So thinking that this new money will bring about HST is simply wrong, it's only part of the first step. Some of the money "may" creep into roadbed/track improvements, that will be it's only foreseeable benefit.
Much more advantage would have been gained with track improvements to raise the lower speed restrictions, such as 10-20 mph sections upgraded to 40-45 mph, rather than raising the fastest sections from 79 (not 70, SR4) to 110 mph. BTW,
the 79mph FRA speed limit is for trains without PTC or Cab Signaling. There is no Federal highway speed limit, that is State's Rights, although states may lose some federal subsidy funding for having speed limits higher than rec., such as when we had that stupid 55mph recommendation.
In the same way that "making up time" depends not on time spent speeding faster, but on reducing slow and null (zero speed) time,
increasing average transit speeds is more dependent on reducing the slow sections:
Class 1 - 5 miles at 15mph = 1200 secs = 20 minutes
Class 3 - 5 miles at 45mph = 400 secs = 6 min 40 secs
Gained
13:20 running time reduction, for maybe $200,000 per mile or less.
Class 4 - 5 miles at 79mph = 227 secs = 3 min 47 secs
Class 6 - 5 miles at 110mph = 164 secs = 2 min 44 secs
Gained
1:03 running time reduction, for maybe $3,000,000 per mile or more.
In addition, each upgrade to a higher class of track (1 to 9) is much harder and more expensive than the previous upgrade interval.
"FRA’s track safety standards establish nine specific classes of track (Class 1 to Class 9), plus a category known as Excepted Track. The difference between each Class of Track is based on progressively more exacting standards for track structure, geometry, and inspection frequency. Furthermore, each Class of Track has a corresponding maximum allowable operating speed for both freight and passenger trains. The higher the Class of Track, the greater the allowable track speed and the more stringent track safety standards apply"
Class - -
Freight -
Psgr.
Excepted 10mph - N/A
Class 1 -10 mph - 15 mph
Class 2 -25 mph - 30 mph
Class 3 -40 mph - 60 mph
Class 4 -60 mph - 80 mph * Most US tracks, 80-1=79mph max
Class 5 -80 mph - 90 mph
Class 6 - N/A - - 110 mph
Class 7 - N/A - - 125 mph
Class 8 - N/A - - 150 mph
Class 9 - N/A - - 200 mph
http://www.fra.dot.gov/downloads/PubAff ... 0FINAL.pdf
BTW, FRA speeding fines/sanctions apply at 10 mph or 10% over the maximum permissible speed, whichever is smaller, although most railroads are about twice as restrictive, i.e. - 5mph or 10% over.
We were taught over and over that you don't make up time by going faster (you are already supposed to travel at the maximum!), you make up time by reducing delays.
Keo