Showing posts with label Forecast. Show all posts
Showing posts with label Forecast. Show all posts

Saturday, April 4, 2020

Coronavirus: Light at the End of the Tunnel


  • On March 11, the World Health Organization declared a Covid-19 pandemic
  • On March 12, Hawaii decided that all large events are canceled. Disneyland announced its closing.
  • On March 13, Pres. Trump declared a 'state of emergency' in the U.S.
Right then I started collecting data for the World and for the US. All my data were taken around noon from ncov2019.live, and rounded up to nearest hundred cases.

Here is the summary of my data and projections which suggest that there is light at the end of the tunnel.


The first three graphs show the number of cases for three weeks starting in mid-March. The second graph suggests that a change has occurred and that the rate of daily growth has started declining. The third graph suggests that daily growth has become 'permanently' under 20% and declining. The fourth graph summarizes these three weeks of 21 daily data points and shows a clear downward trend.

In this writing, the last data point was collected at noon on April 4. Where do we go from here? 

If the rate of decline is slow, as the third graph suggests, then the shape of new cases will follow the red line on the bottom graph. New cases will peak at the very end of April. Around mid-May, the new cases in the US will be the same as now at about 300,000 per day. This is a likely scenario. The likely maximum of infections in the U.S will be about 35 million, and the maximum of new daily cases of will be about 1.2 million.

If the rate of decline is fast, as the fourth graph suggests, then the shape of new cases will follow the yellow line on the bottom graph. New cases will peak around April 15 and on May 15, the US will record only 100 new cases. This is a wonderful statistical outcome but not likely to occur unless the mitigations, warm weather and other factors serendipitously conspire to put a lid on this pandemic. Even under this optimistic scenario, the number of infections in the U.S will be about 12 million.

I'll keep following the numbers but indeed there are statistical indications that there is an end to the 'Covid-19 tunnel' in late spring.

======
There is great risk in making forecasts using only a few and fairly volatile data points. Every week adds precious new data that enable better future predictions. I will leave this post alone and will post updates separately. In this way, we can see how close we got in predicting 6 weeks into the future based on 3 weeks in the past.

Wednesday, February 14, 2018

Honolulu Rail Creates One Tenth of Jobs Promissed

Quoted in Marcel Honore's article in the Honolulu Civil Beat Rail Promised Lots Of Jobs But There’s No Sure Count Of What It’s Delivering.
  • “It’s not the kind of project that lends itself to a huge amount of workers working at the same time,” said Panos Prevedouros, a longtime rail critic and one-time mayoral candidate who chairs the University of Hawaii’s Civil Engineering Department. “The way they did it, it’s much simpler to manage. It takes a longer time, but it keeps the (job) count quite low.”
By "the way they did it," I explained to Marcel that HART rail is being built one segment at a time by a single builder, instead of having, say 4 builders building 5 miles each, simultaneously.

  • Prevedouros said the city should keep better track of the actual jobs that rail is generating since that was such a strong part of the pitch years earlier to build the project.  “What was presented and promised, it was all rhetoric around the Great Recession we had. So it was a big selling point,” he said.  “Really, 1,000 jobs doesn’t make or break anything.” [in Honolulu]
It wasn't difficult for me and unbiased economists to see the lies in the jobs numbers. Back on April 14, 2010, I exposed this in my article Proposed Rail Creates 1,000 Local Jobs and Destroys 4,000 Jobs.

See Scott Ishikawa serving city propaganda for the 10,000 jobs... and an interesting comment underneath.

On March 23, 2012 I simply wrote that HART's Job Estimates Are Wrong.

So, let's recap... So far I was right about the cost of rail will be much higher than advertised, the delivery of rail would be much longer than advertised, and that the advertised job numbers were fake.  There are two big ones left: Reliability and Ridership.

Reliability may be better that mediocre now that Hitachi has put its name on the Ansaldo trains. Ridership will be, at best, one half of what the city proclaimed in the EIS (see my estimate.)


Tuesday, November 22, 2016

Brief Trump Presidency Forecast


It's about two months before Donald Trump becomes the 45th president of the US. Here's my forecast for his presidency.

Trump will be full of surprises. Folks who adhere to “traditional values” and have no love for Hillary and Obama will be disappointed. Other than appointing one or two fairly conservative Supreme Court judges, I don’t think that he will do much about changing the status of issues that liberals hold dear such as abortion and gay marriage. (But there can be future implications, as with any conservative or liberal leaning court.)

Trump is basically a real world-based businessman and deal-maker, a New York City "lite-liberal" with soft Christian values. He’ll show a high preference for government investment in infrastructure and low preference for government-centered money redistribution schemes like entitlements and ObamaCare. 

Trump will be more US-focused rather than tackle global issues. More so if an economic recession hits, which is almost certain to occur in the next four years. He will attempt regulatory changes, especially in the energy, transportation and heavy industry sectors. Many will have negative implications to pollution but positive implications to domestic economy and employment.

Trump's biggest challenges will be managing the defense budget and the interest on the massive national debt vis-à-vis his ambitions for job creation and the Congress’ funding preferences. Pentagon may wind up being on the losing end. I doubt that Trump will push for a tax overhaul, although he may attempt one.

Two areas of Trump's inflammatory campaign rhetoric that will be subject to some sort of action are Islam-related and the wall between the US and Mexico. Islam-targeted (re)action is very likely if he is provoked by international or terrorism events; this is almost inevitable.  Some form of the wall will happen, mostly as an expansion of the existing portions; see below. The deportation of illegal residents will see a boost, mostly targeting criminals, human traffickers and drug operatives. (Many states want their domestic marijuana production and dispensation to succeed.)



Wednesday, October 2, 2013

Ten Plus One Reasons Why I Do Not Support The Honolulu Rail Project

  1. Among all travel options on Oahu, mass transit serves 6% of the travelers, just slightly above the U.S average of 5%. Focusing on this small piece of the pie is no way to solve the mobility problem of the 80% that drive and carpool, i.e., rail is the 1% solution because City's rosy numbers show that transit share will grow from 6% now to 7% with rail.
  2. Spending over five billion dollars for a non-solution is clearly unethical and all responsible for it are breaching their professional and fiduciary duty. As an engineering professional and past candidate for mayor I want no part in this unethical endeavor.
  3. The original system was supposed to be 34 miles through Kapolei to UH and Waikiki for about $3 Billion as shown in the headline above.  The current project starts a mile out of Kapolei and dead-ends at Ala Moana shopping center with no service to Waikiki or UH. Just 20 miles for over $5 Billion. If offering the public 41% less for a 73% higher price is not a lie then what is it?
  4. In some respects Oahu's congestion is comparable to that of the largest cities in the nation chiefly because Oahu is lane deficient.  20 miles of rail and 20 overhead stations will cause critical lane closures and result in debilitating congestion for a decade or more. For example, look at the image below and consider what traffic in downtown Honolulu will be like with Ala Moana Boulevard closed for about a year? The impact on quality of life, economy and tourism will be huge.
  5. B, C, E, 3, 9, 11, 20, 43, 53, 73, 81, 90, 91, 92, 93, 94, 96, 97, 98A, 101, 102, 103, 201, 202 are all the bus routes that will be eliminated or terminated to the nearest rail station. TheBus will be changed from a core operation to a feeder operation. This will add a lot of inconvenience and disappointment to the people that need transit service the most.
  6. Rail is high security risk. Mentally ill shooters and terrorists typically attack work, school and train station locations. Third rail systems like Honolulu's are a magnet for suicides. Train stations are a hot spot for robberies and drug trafficking.
  7. Rail makes Honolulu less resilient:It is practically certain that a major storm will hit Oahu in the next 50 years. Ten miles of reversible lanes not only will reduce congestion by over 30% for one third the cost of rail, but also they will be a critical backbone for post-storm recovery. Instead rail will be incapacitated for a prolonged period and critical resources will wasted to revive it.
  8. Cannot afford it. Hawaii is among the five worse states in the country in pension and health benefit funding liability. Future budgets will be very tight for the state. Outer islands should worry about their loss of big subsidies they receive from Oahu (i.e., they too will pay for it.)
  9. The City already has big problems finding a few million dollars for important services. Its budgets will be crushed by the union raises, the EPA sewer consent decree and the pension liabilities. Then add the rail construction cost-overruns and bankruptcy may not be far off.
  10. Out of more than 650,000 adults on Oahu only 156,000 voted YES to rail in the 2008 elections. That yielded a marginal 50.6% approval among those who bothered to vote. During elections the ratio of pro-rail lies to anti-rail information in advertising media was more than 10 to 1. Taxpayer monies were used to support rail and, indirectly, rail-supporting politicians. Calling this a "mandate" is disingenuous and the process was indeed unethical.
Last but not least, the aesthetics of the system are undesirable for the small, tropical capital of Honolulu. Here is just one before/after picture offered in city's renderings.

Thursday, April 11, 2013

Sierra Club Used Wrong Population Projections in Support of Honolulu’s Rail

If one wants to keep things simple, then it could be said that the base of Sierra Club's support for rail is simply a case of garbage in, garbage out.  In other words, garbage data were used to come to a garbage conclusion.  However, I believe that data were sufficiently twisted to support the underlying car-hating philosophy of "environmentalists."

In this case, the bias is clear because supporting rail (to kill auto) causes huge damage to prime agricultural land. The Sierra Club simply cannot have it both ways.

Explanations are provided in my article in the Hawaii Reporter.

Friday, March 15, 2013

Honolulu Rail: A Textbook Case Of Poor Planning, Denial And Diversion

I sent this article to all elected officials in Honolulu's and Hawaii's government.
Mahalo to Honolulu Civil Beat for hosting my article.

This is an important article of national and local significance.
Honolulu's only daily, the Star Advertiser, would not publish it.
They have not published anything I have submitted since 2009.
Please show them that information cannot be suppressed.
Forward and share it widely.

I added this postscript: Now as a responsible pro-rail politician, go ahead and deny all these as not applicable to Honolulu. But then:
  • The project is about three years late.
  • It has incurred tens of millions of dollars in penalties.
  • There was a costly (over $150 Million mistake at the airport alignment) for which no one was punished or paid for it.
  • The project violated state law and was stopped.
  • Ansaldo is the most unreliable of all major rail manufacturers. But this was Honolulu's choice.
  • Ansaldo's parent, Finmecannica is in financial trouble and for years it's been trying to jettison Ansaldo. It will.
  • HART is a clueless board. Imagine the same people as the board of Boeing or Hawaiian Air. Worse than useless.
  • City erected a bunch of columns in the middle of (agricultural) land for which it has no ownership, deed or guarantee.
  • The project budget is sored up with TheBus capital funds and city Sewer Fund guarantees. This will play out just fine...
  • Do you recall the purchase of hundreds of tons of steel rails which are now properly rusting at Barbers Point Harbor?
  • (I just recalled all these in 10 minutes. There is more. All these occurred with YOUR approval and consent.)
And
  • As of mid-March 2013 the project is less than 3% constructed!
  • Federal court appeal has been filled.
  •  Several eminent domain suits or class action suit are likely.

Friday, January 11, 2013

Transportation and Energy Infrastructure Projects: Forecasting is Unnecessary

I enjoyed Dr. Martin Wachs' brief article Planning for High Speed Rail (HSR) in California. It centers around planning and forecasting: "The current debate is divisive precisely because improved data and models cannot provide a better glimpse into the future" Wachs says.

After nearly three decades in planning and policy, and six years involvement in local politics I have come to believe that forecasting is unnecessary as a primary decision making tool. Why?

Because transportation infrastructure deployment lags demand by decades. Why do we need to forecast 20+ years into the future? The need is present (or not.) Current data are the best quality data we have. So instead of making numerous uncertain assumptions about a future we do not control, let's assume that the project is built overnight and assess its benefits at the present time.

In the case of Hawaii, when I first relocated here in 1990, traffic congestion was the No. 1 issue and has remained in the top 10 ever since. Twenty three years later, roadway capacity addition has been marginal and most major bottlenecks have not been addressed. So why does the city's planned rail project have a 2030 horizon?

I think the answer is this: The proposed rail does not generate enough ridership with the current population so artificial demand balloons for population and jobs in 2030 are "forecast" to justify the system.

Similarly California has a population of 38 million with huge concentrations in Los Angeles and San Francisco metro areas. If HSR does not work for 38 million, then it won't work. Why is a 20 to 50 year projection needed?

Worse yet, the typical  planning models lack credibility because they are never tested with back-casting.  If Parsons Brinkerhoff's model is trusted to predict transit ridership (bus and rail) in Honolulu with year 2006 as baseline and 2030 as the horizon, does it also predict transit ridership for 1982?  In other words, we should check the model's ability to project forward by using the 24-year period from 1982 to 2006; for which we have perfect information. How does the model do?

I think the answer is this: It does very poorly and for this reason back-casting is never applied.(1)

Obviously, since the inception of a project, several years go by for environmental studies, design,  engineering, funding, bidding and construction. So a 10 years-out plan and forecast is needed. But multi-billion dollar energy and transportation infrastructure projects should be justified by their "now" value and not by future demand balloons.

If the projects are beneficial "now" then long range forecasts can be performed for selecting the proper size for them. For example a reversible highway sized at two lanes for sufficient congestion relief may need to be built with three lanes to accommodate future demand. Similarly a 1,000 MW power plant may be engineered with a 1,200 MW capacity for the future.

Projects funded with private capital, fully or partly as in Public-Private Partnerships, sophisticated risk analyses that protect investment from foreseeable risks are conducted. These meticulous and carefully inspected forecasts of project costs and revenues have little in common with the manipulated forecasts for taxpayer funded and subsidized systems, primarily transit systems.

For taxpayer funded projects forecasting is unnecessary and indeed misleading for decision making. It is commonly used a tool for deception, particularly for rail projects.(2)


Endnotes

(1) My students and I investigated the accuracy of traffic volume forecasts primarily in the agriculture-to-residential mega developments in Ewa between 1976 and 2002. We found this:

The study compared forecast traffic levels from Traffic Impact Analysis Reports prepared between 1976 and 2002 to actual traffic volumes recorded by the Hawaii State DOT in the city and county of Honolulu. The information extracted uniformly from 11 reports included year of report, consultant, type of project, location, movement, forecast horizon, forecast traffic volumes and forecasting method.

This study focused on road and residential developments and examined the accuracy of traffic demand forecasting, the conservative or optimistic tendency in traffic forecasts and the potential factors affecting accuracy. The results revealed that traffic forecasts are on average overestimated by 35% and there is a clear tendency to overestimate future traffic volume. Errors ranged from -40% to +200%.

SOURCE: Caroee, Maja, Panos D. Prevedouros and Alyx Yu, Volume Forecasts for Environmental Impact Statements and Traffic Impact Analysis Reports: Accuracy of Road and Residential Developments in Honolulu, Paper 13-1398, 92nd Annual Meeting of Transportation Research Board, Washington, D.C., 2013.

(2) Flybjerg, Bent, et al., Delusion and Deception in Large Infrastructure Projects (2009)

Friday, December 14, 2012

The World in 2030: World Preeminence for China, Energy Independence for USA

The Verge: The US National Intelligence Council, representing the 17 intelligence agencies of the US government, says that "we are at a critical juncture in human history" in its fifth Global Trends report. The report details the challenges facing the species in the coming decades; the council says that many positive developments in health, education, and governance will propel human civilization, but that the threat of conflict could emerge as supplies of food and water become more scarce.

The Diplomatic News: The American Century is drawing to a close, and the US Defense Department will have to be more flexible in dealing with a faster-paced multipolar world, according to the Global Trends 2030 report

NY Times: A new intelligence assessment of global trends projects that China will outstrip the United States as the leading economic power before 2030, but that America will remain an indispensable world leader, bolstered in part by an era of energy independence.

London Financial Times:
  • Pax Americana ‘winding down’
  • China will be the world’s largest economy by 2030 but the US will still remain “first among equals” in the international system
  • Europe, Japan and Russia will continue to experience relative decline
  • Asia will come to dwarf the rest of the world in terms of its economic and military power
  • The wave of Islamist terrorism is likely to have ended by 2030
  • The US will be energy independent and could be a significant exporter of energy
  • Advances in manufacturing technologies could reduce the need for outsourcing
Here is what the report says about renewable energy. It makes Hawaii look like a fool by wasting millions of taxpayer dollars to produce Kilo-Watts instead of Mega-Watts (1 MW = 1,000 KW):

"With shale gas, the US will have sufficient natural gas to meet domestic needs and generate potential global exports for decades to come. Increased oil production from difficult-to-access oil deposits would result in a substantial reduction in the US net trade balance and faster economic expansion. Global spare capacity may exceed over 8 million barrels, at which point OPEC would lose price control and crude oil prices would collapse, causing a major negative impact on oil-export economies."

"The IEA’s baseline scenario shows the share of renewables rising just 4 percent during the 2007-2050 period. Hydropower accounts for the overwhelming majority of renewables in this scenario, with wind and solar energy providing 5 and 2 percent contributions in 2050 respectively. Their contributions in 2030 would be even less."The 170 page report can be downloaded here: National Intelligence Council, Global Trends 2030

Thursday, October 4, 2012

Fixing the Basics on Rail for Hawaii's Pro-rail Politicians

Full article in Hawaii Reporter. It closes as follows:

If Hawaii's pro-rail politicians are really interested in improving transit in the county of Honolulu, they may begin their education on the history of elevated rail in sunshine cities by simply reading about Miami's Metrorail, and San Juan’s Tren Urbano. Here are a few highlights for Metrorail and Tren Urbano.

Miami’s Elevated Heavy Rail: They got 80% Federal funds but still they run out of money due to cost overruns. (Honolulu gets only 30%).  Ridership forecast was about 200,000 riders (Honolulu's is about 120,000 riders).  When the first segment of the single line opened ridership was only 10,000.  In 1990, six years after opening, it reached only 25% of its forecast ridership or about 50,000! They too ordered trains from Ansaldo and there were allegations of conflicts in the procurement.

San Juan, Elevated Heavy Rail: They got 50% Federal funds but still there was a 74% escalation of construction costs (+74% over budget!)  There was a huge escalation of combined bus and rail operation and maintenance cost after the line was opened. Combined costs shot up by +250%!  There was a downgrade of Puerto Rico’s bond ratings and new taxes were enacted to pay the debt. There was a dramatic decline of total transit ridership (bus and rail) because the train dismantled their bus. It is now more than six years since its opening in 2006 and the train has not reached 50% of its opening year forecast ridership!

Bottom line is that trains are like wind mills. Their theoretical capacity is high and the promises for power and ridership are full of hype.  Once installed reality kicks in and they prove to be only ~25% productive...

Friday, September 14, 2012

Island Heavy Rail Calamity: San Juan Repeats in Honolulu

Tren Urbano (or City Train) in San Juan, Puerto Rico is a perfect comparison with Honolulu's heavy rail:
  1. Both are heavy rail systems with a very high cost per mile of rail line.
  2. Both are systems on similar tourist/agriculture/military island communities.
  3. Both are under Federal Transit Administration oversight.
  4. Both received US federal funds.
  5. Both have the same lead planner, Parsons Brinkerhoff.
I have written in the past about Tren Urbano:
Recently, Cliff Slater of HonoluluTraffic.com has developed a documented 2-page summary of the consequences of Tren Urbano such as:
  • Huge escalation of construction costs (+74%).
  • Huge escalation of combined bus and rail operation and maintenance cost after the line was opened (+250%).
  • Downgrade of Puerto Rico’s bond ratings.
  • Dramatic decline of total transit ridership (bus and rail) because the Tren cannibalized their bus. This is happening to TheBus now.
  • It is now more than five years since its opening and Tren has not reached 50% of its opening year forecast ridership! (See link above where I provide comparisons that show HART ridership estimates are 2 to 4 times too high.)
Now all these terrible transit and financial outcomes occurred in San Juan where population is much higher, and average income and car ownership is much lower than Honolulu's (see 2000 data below). The Tren (like history) is repeating itself in Honolulu. The deliberate discounting of history by current elected officials and certain candidates is truly bewildering.


Tuesday, September 4, 2012

Honolulu Rail Forecast 2 to 4 Times Higher than Actual Systems

The City estimates that TheRail will have a ridership of 116,000 (boardings) in 2030, about 10 years after the system is supposedly completed.

While TheRail is actually a fully elevated, steel-wheel-on-steel-rail heavy rail system, it is designed to fail by combining two poor choices:
(1) It is fully elevated which means it costs well over 5 times the typical light rail system.
(2) It does not use large, heavy rail style, high capacity trains, but smallish light rail trains.
These two choices make it a high cost and low capacity system.

Because of its low capacity, it is comparable to existing light rail systems. The table below includes all US light rail systems that (a) may be characterized as "modern" by having been developed after 1980, and (b) are over 8 miles of length. This comes to 11 comparable systems with route miles ranging from approximately 10 to 42 miles.

The average daily boardings of these 11 existing systems is 38,852 and the average route miles is 28. This yields 1,536 daily boardings per mile or 1,500 boardings per mile for a round number. (Remember we are talking about year 2030 and roughly 20% of TheRail’s users have not been borne yet.)

When one looks at statistics, it is advisable to remove the highest and lowest values and re-check the averages. By doing so for daily boardings and route miles, systems 3, 6 and 9 drop out. The resulting average daily boardings of the eight systems is 37,822 and the average route miles is 27. This yields 1,528 daily boardings per mile. This again rounds to 1,500 so this estimate is quite robust.

Using this estimate of 1,500 times the 20 miles of TheRail yields 30,000 daily boardings. Now let's give a huge break to Honolulu because of the H-1/H-2 congestion, the high cost of living and the higher average density (although high density does not apply west of Middle Street): Let's double this estimate to 60,000 boardings. This will be the likely maximum boardings of TheRail.

What's the City's estimate that FTA approved? 116,000 daily boardings, which is laughable.

Both Parsons Brinkerhoff and FTA received dozens of eggs on their face for the island heavy rail Tren Urbano in San Juan, Puerto Rico where they estimated 80,000 boardings on the opening year and they got 25,000 in 2006.

There is no lesson for PB, FTA and HART to learn. There is no accountability or penalties. They are all dedicated promoters of TheRail. Honolulu's ridership estimates simply prove that history (and unabashed deception) simply repeats itself.

Monday, February 6, 2012

Rail and Weather Forecasters


Hawaii weather is meant to frustrate weather forecasters. They predicted buckets of rain for Sunday and we got next to nothing. Then they predicted next to nothing for Monday and we got buckets of rain! As in the picture below.


Speaking of weather forecasts, professor Bent Flybjerg of Oxford University places weather and rail forecasters at opposite ends of the spectrum of truth and honesty.

Weather forecasters are neither deluded nor deceptive; they use some of the most complex models and report their forecast for a few days in the future. They get it right most of the time.

Honolulu Rail forecasters have used primitive models (*) and gobbles of delusion and deception (Dr. Flybjerg's words; see graph below) to predict rail's efficacy 20 to 30 years in the future! And they never get it right.


(*) Oahu rail forecasts were based on a relatively ancient OMPO zonal model from a 1994 survey. Much to the discredit of our local government at all levels, we have not conducted a comprehensive origin-destination survey since 1994. So we have developed a five billion dollar transportation investment using old and primitive data. We all know "garbage in, garbage out" and that's exactly what we are dealing with here.

Do not get me started about the traffic tools they have used in the multimillion dollar analyses to predict future traffic conditions. These rock bottom tools are acceptable to Hawaii government, and FTA simply does not care about traffic conditions. However, the Federal Highway Administration has this opinion: "Equation tools are very appropriate for localized study areas like a single intersection or a highway section. Equation tools also are appropriate for a quick-and-dirty preliminary analysis that may lead to or warrant a future, more detailed analysis." Above those tools come four more classes of tools with increasingly advanced sophistication, but hardly any of them were used in the rail EIS.