a synopsis of a study of the 2 methods brings up many questions as to how both are being evaluated after starting service. 2 main things are passenger growth and costs of building. study author says not enough information is required after service starts to evaluate a project especially on BRT. author will post more on study later but take a look so far -------
Lyndon Henry excludes BRT that runs in mixed traffic because he considers it not to be rapid transit at all. He looks only at BRT on a dedicated roadway.
However, by putting BRT on a dedicated roadway in congested areas and then moving it onto roads in outlying areas we can often get sufficient speed in both places with a cost reduction where buses are simply running on roads. That is, of course, a compromise. But it is a compromise with a lot of good points.
BRT does not get a lot of oversight. The biggest disadvantage is that you can not increase the capacity in relation to available manpower like you can with MU’ing streetcars with rail.
The line I would cite as a major success in the late 70’s was San Diego’s San Ysidro line. It was a major embarrassment to USDOT. Not because it was built under budget, opened early, got 115% of its operating revenue from the fare box. But because it did all this without any federal funding.
San Francisco Muni is very happy with their rail fleet because of its crush capacity. Also San Francisco gets it’s power from a city owned Hetch Hetchy dam. Numerous times Muni has been quite glad to not have to pay unpredictable prices for diesel fuel. In addition to it’s rail fleet Muni also has an extensive electric bus fleet. In addition Muni does not like having to use large(articulated) buses due to the fuel expense(in addition to some oddball engines).
Muni concluded a long time ago that BRT that was used is Los Angeles at the time was not the way to go. They also had a very good idea of the cost.
I am not sure about Seattle’s experience but I would note that they do not run diesel buses thru their tunnel’s only electric.
I would also point out that Los Angeles MTA has converted much of their BRT to rail and I think Salt Lake City did the same.
Rgds IGN
“Our study… Major challenges …, were that not only is there no standard, consistent process for evaluating how well these projects meet their goals, but in fact crucial data elements are either obscured or unavailable for convenient public access.”
If there are no standard, consistent processes for evaluating the projects, why would anyone place any credence in the author’s conclusions?
“Data for DMU light railway projects were also a problem…, reliable data for only one such project—North County Transportation District’s Sprinter line linking Oceanside and Escondido, California.”
The cost of Capital Metro’s Red line from Leander to downtown Austin, although not central Austin, which is a DMU line, is very well known. The data has been published in numerous sources. In addition, the annual operating costs for the Red Line are available in Austin’s annual budgeting and financial statements. This guy was an analyst for Capital Metro, and he does know the cost numbers that have been cited by several sources?
The capital costs to upgrade the Austin and Western for the Red Line commuter service are debatable. The debate centers around Capital Metro claiming that some of the upgrades would have been made irrespective of the planned operation of commuter trains on the railroad. They allocated these costs to freight operations. I don’t know of anyone who believes them.
“These results suggest that BRT projects do not have any particular advantage when very heavy installation (tunnels, elevated structure, etc.) is involved.”
Agreed! But the BRT projects planned for Texas don’t involve extensive capital expenditures. The buses will run along existing roadways, i.e. Preston Road in Dallas, Lamar Blvd. in Austin, etc. The capital improvements for Austin’s 37.5 mile BRT system are estimated to
According to the San Diego Transit Fact Sheet, the current fare-box recovery for the trolleys is approximately 55 per cent. That is better than anything that I have seen for any other transit system.
I was in Seattle just before Thanksgiving. I popped down to the transit tunnel, which is unique. The
Seattle’s transit tunnel was opened with dual-mode trolleybus but the conversion to light rail involved changing the overhead to 12,50 or 1,500V DC precluding continued use of the dual-mode buses. The bus operation now is supposed to be hybred, with battery power in the tunnel, but actually battery power is only used to start out of stations, then diesel is used to the next station. As far as I am concerned this was a far more expensive and disruptive conversion than was needed. Glad to comment further on separate thread if desired.
Approximately 16,000 passengers per hour past a particular point in one direction on one lane, or more, rail is the way to go. Less, bus. Capitol costs vs. operating costs. That is the rule-of-thumb gleaned from a number of successful projects.
One unquantifiable factor that is understandably overlooked is the cachet of rail service of any sort (light rail, rapid transit or commuter rail) over bus rapid transit in attracting riders. For some reason, people who would not ride a bus would be willing to ride light rail or other rail services.
16,000 passengers per hour minimum before rail? That is 267 passengers per minute. Let’s see you move 250 passengers a minute in each direction past a particular point with buses.
It depends a lot on the bus. If the BRT vehicle is really just a low floor urban, articulated vehicle, with lousy seats, HVAC, ride quality and noisy, with a 50 mph top speed. you won’t get many takers for a 40 minute ride, regardless of ROW.
However, if you offer up nice high floor, integrated HVAC, 70 mph, reclining seat, air ride machines, you won’t have a problem, even if they use existing highways.
55 people on 2 second headways at 60 mph is about it for a bus - 55 x 60 /2 = 1650 pass/min.
Don,
Could your clarify how we get buses to leave on a 2 second headway.
Do you mean that a bus can be loaded in 2 seconds?
Or do you mean that you could have several buses loading at the same time so they could leave 2 seconds apart? And if so how many buses would that take?
Or do you mean something else?
John
I was referring to the first 2 years of operation. From downtown to the border at San Ysidro. It was a very heavily used line from the border to downtown. This lines success was what convinced San Diego city leaders that mass transit was worth the investment. Especially compared to trying to build more highways.
Seattle, I’m not as familiar with Seattle’s tunnel as I should be. I was wrong about Seattle.
Rgds IGN
Also this is what I’d found on BRT.
: http://improve-public-transport.wikispaces.com/intro_BRT#brtdefinition
Rgds IGN
- My error. The 16,000 figure was really for two lanes, on in each direction. And 125 passengers per minute in one lane is a maximum feasible goal, with articulated buses carrying 125 passengers and operating at one per minute. (In the Lincoln Tunnel bus lanes, one bus per 45 seconds is normal.). This might require skip-stop service with long platform lanes that the express bus can pass. 8.000 is the right figure for one lane, not 16,000. My apologies. The headway in one lane is 60 seconds, not 2 seconds.
I still find it difficult to imagine running 125 passenger articulated buses on one minute headways being more efficient than rail. Those buses in the Lincoln Tunnel are not stopping to load passengers.
IGN,
Thanks for the article. However, it seems to me that it reflects the confusion about BRT. It defines BRT as a system that uses its own dedicated right of way but goes on to say that BRT can run on regular city streets.
It seems to me that if BRT runs on its own right of way that ROW must be purchased and build. Does it cost more to purchase and build land for a roadway than it does for a railway?
The article also says BRT buses can interfere with traffic signals so they can get all green lights. However, such a traffic light control could be put on any bus. Ordinary local buses would run faster if they had such a device.
Then there is the fact that BRT has new buses with distinctive colors and more widely spaced bus stops with bus shelters rather than just bus stop signs. But the new buses will get old and any bus may be painted a different color and bus shelters can be put up anywhere.
Without the dedicated ROW it seems to me that BRT is a distinction without a difference and a big part of the savings are because buses run on existing streets. With a dedicated ROW much of the cost advantage vanishes.
This is not to day that BRT, even running on city streets, should not be used. I don’t see transit as a one size fits all proposition and different situations require different solutions.
New Jersey Transit runs a system of GO buses which look like BRT but are not called by that name. The buses are new NABIs, the same as used on local routes. They run from eastern Essex county directly to Newark Airport and give people a one seat ride there. They have fewer stops and shelters and are painted blue while most NJT buses are painted white. I don’t know what NJT’s experience with them is but it seems like a good idea.
John
BRT is in the long range plans here. It is my understanding that it is essentially a rubber tired equivalent of light rail. It runs in a dedicated right of way and uses stations like light rail stops using tickets purchased at the stations rather than fares collected on board.
The BRT route has been partially built as part of the upgrade of the road where it is planned but the people who reside along that route are still demanding it be changed to light rail. CATS says if they can find the money for light rail they can just put tracks in the busway but right now it doesn’t look like the money will be available. It does, however, demonstrate that there is a huge difference in the public perception of bus vs rail. We had bus service that roughly paralleled the Blue Line light rail. Since the Blue Line opened it has moved many times the number of people per day who used the bus when it was available. The park and ride lot just off I-77 for the express bus to city center has 20 or 30 cars parked in it. Not far away, just off I-485, is a parking deck that holds 1160 vehicles for the light rail station. It fills up so early in the morning that CATS has been buying land around it to create more parking spaces. The general public likes rail, but many of them would not use a bus.
a bus IMHO does not ride as well as a LRT
The “Catch 22” for BRT is generally that if you build it out complete with dedicated ROW and it’s own stations and all the bells and whistles for the urban “last mile”, what you have is a light rail line on rubber tires. Same cost, same capacity*, etc. So, you might as well do rail and get the “cache” - and a bit more safety.
If you try to do it on the cheap, you wind up with a gussied up urban bus route and it becomes apples and oranges.
The problem is that when BRT is proposed, it’s never clear what’s being talked about. Often, it is the “on the cheap” version - just some driver controlled lights and by-pass lanes.
*there is a trade-off between the stopping distance of a bus and the capacity of a light rail train. You can get more per train, but more buses per minute through-put. They wash.
A key question is whether you need a system that can handle a throughput of 16,000 passengers per hour. Clearly, this is not the case in Austin or San Antonio, and it is not likely to be the case. Likewise, it is not the case in Dallas, which has built the most extensive light rail system in the southwest.
The average throughput on DART’s light rail system is 1,884 passengers per hour. The average rush hour throughput is 6,280 during the morning and evening rush hour. Neither of these figures come close to 16,000. Moreover, the average passenger loads on DART’s light rail lines, when adjusted for system expansion, have remained relatively stagnate.
As noted in my previous post, there are areas of the country where light rail is the optimum choice. But not every area! For the country as a whole, buses (rapid or otherwise) are a better public transit choice.
The BRT in Austin will run on city streets. It will not require capital intensive rights-of-way. And it will cost a small fraction of the estimated cost for the proposed light rail line, even adjusting for the difference in operating costs and the life expectancy of the capital equipment.
BRT can compete with light rail times for distances of 12 to 15 miles. After that trains (light rail and commuter rail) win the race.
I lived in Australia for five years. Whilst there I traveled to Adelaide monthly on business. Adelaide has the O-Bahn, which is a 7.5 mile guided bus way. I have ridden it numerous times. The buses run at speeds up to 62.5 mph on a dedicated track. At interchanges they can leave the guideway and serve neighborhoods without requiring passengers to change mode of transit. The system offers flexibility that is impossible with rail. The system was costly, although no more than comparable light rail systems, but the City Council has scaled back plans to extend the system because of the cost. It has found that regular buses are more cost effective for a city l