Quote:
Originally Posted by wong21fr
That seems rather out of step with what was originally stated for the North Corridor. Is it absolutely stated that the North Corridor will now be DMU instead of EMU as has been planned,designed, and is now under construction?
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So, let's assume that the $343 million North Line has overhead catenary and will use vehicles like those to be used on the East Line.
If true, we are getting a very good bargain- something like $30 million dollars per mile, including stations, new ballasting, new ties, etc.
Is this to be a single tracked line, with 2 track stations? The figure, points IMO, towards this. If so, then the line has the same problems, but, over a greater distance and more stations than the West Line has between the Federal Center Station and the Taj Mahal Stations, i.e., one of headways and sidings for trains to wait for oncoming trains to pass by, which has been discussed before
(what would head ways be when trains are traveling two directions with the only place for trains to pass one another at the five intervening stations?)
If the line is not double tracked- regardless of propulsion mode, the time required to travel the length (13 or so miles) would be in excess of 35 minutes due to program scheduling for one to two minute slow down for any reason in either train direction
(with two track mains and no additional track the slowdown caused by a train going in one direction, does not quickly affect trains traveling in the opposing direction.)
Hopefully, then, the $343 million (at least) will buy us electrified, double track to 124th Ave, with no same direction train passing capabilities. In that case, 30 minute times between 124th Ave and DUS are possible.
This compares to the 120X running from 120th Ave to the Market Street Station in 25 minutes as is.
If RTD wants the system to work very well, the line will need double tracking, and, a few stations with triple tracks to use to bypass a same direction train at speed. In that case, 20 minute times might be possible which would attract a large number of riders. Add a good connection to the to be extended Central Rail line to 38th, and, and to East Line bound train at the same location, and, ridership would increase even further.
So, what is the plan to be acted upon at the 11/26/13 hearing?
(In my strong opinion, if the choice has to be made between double tracking the line the entire length and using DMUs versus a single track main and EMUs the choice is obvious: go with double tracks and dmu power)