$10 Billion Is the Ultimate Price Tag for Honolulu's Rail Boondoggle

Back in January 2016 the Honolulu Civil Beat published my opinion with the title: $10 Billion: The Ultimate Price Tag for Honolulu Rail?

On Friday, May 13, 2016 the cost or rail was pegged by HART at $6.9 Billion.

On Sunday, May 15, 2016 the cost or rail was pegged by FTA at $8.1 Billion.

On March 20, 2016, the New York Times published an article that included my opinions with the title: Hawaii Struggles to Keep Rail Project from Becoming A Boondoggle.

Given these cost updates (while less that one third of the project has been built), clearly the question mark is no longer necessary, and the project is a verifiable boondoggle.  Thus:

$10 Billion Is the Ultimate Price Tag for Honolulu's Rail Boondoggle

I am sorry that Honolulu voters did not pick me in 2008 or 2010, or past Gov. Ben Cayetano in 2012 for mayor. Honolulu's punishment in now too severe, and we haven't seen the half of it yet. 

Engineering experts raise quality concerns over Honolulu’s rail construction

With Gina Mangieri of KHON Channel 2 News Always Investigating...

So we took a field trip with engineer, and prominent rail critic, Panos Prevedouros.

“One of the cracks in this area was pretty alarming and it was along the line of the segment,” he pointed out.

Other concerns have to do with the amount of rust, starting with tracks that the city bought early to hedge on steel price.

“Basic rust is not a problem. It’s actually a protective coating that, when the rail starts running, it will clear a lot of it,” Prevedouros explained.

But when it gets installed, more problems can arise. “One of the issues is that it creates problems with the labor that tries to install them. They may need extra protection because when you’re bolting them, there may be excessive dust of rust,” Prevedouros warns, which can be dangerous when inhaled.

Other rust hot-spots lie in the rebar forms that start each pillar.

“Here we see the rebar for the support columns,” Prevedouros pointed out, “and I am a little worried that it’s quite rusty, because when you pour the rebar around it, it creates problems with adhesion of the concrete to the rebar itself. In the long term, it may cause spalling problems, delamination problems.”

That’s not the only worry about the pillars, especially in certain parts of the route.

“The problem in general with Waipahu is it was famous for springs and underneath water caves,” Prevedouros said, “and this is a very heavy, very long bridge. Some of these pylons may have settlement issues. There have been reports that at least a couple of them have issues of settling. They’re going into the ground. Beyond a few inches, it becomes tremendously stressful for the structure and we probably need to add more to support the bridge.

“It could be sudden, but it could take several years,” Prevedouros added. “First, we’ll hopefully see cracks, but then we’ll have to react to it before we have a collapse.”

Quick reactions have to be at the ready on other key jobs along the building process, like when crews go to snug the segments together with cables in something called “post-tensioning” — something that brought a near disaster near the Banana Patch — which was memorialized in HART’s report as Span 258, NCR 509.

“They had a failure with a segment they were trying to post-tension it, which is the process this thing is getting built,” Prevedouros said, “but the tendons failed. There was essentially a minor collapse. Now they’re shoring it up to try to connect it with the two pieces to the left and the right. The whole segment seems to be supported from the bottom and they’re trying to fix the situation.”

“Does it run a future safety risk?” Always Investigating asked.

“The problem is now, by having this failure, it is costing a lot of time and resources to fix it,” Prevedouros said. “But they will fix it in a way that will probably be quite durable.”

Liang Shi: Will Driverless Cars Improve Traffic Congestion?

Many colleges and universities have a quick but tough competition among their graduate students called the 3MT or the Three Minute Thesis. Students stand up and deliver, in three minutes or less, a coherent and interesting summary of their research leading to their Masters or Doctorate degree.

I am very pleased that my PhD student Liang Shi competed among ~60 University of Hawaii at Manoa graduate students and got 2nd place.  Congratulations!

"You may have seen the news that Google is testing their Driverless cars in California. The car was designed to drive itself without any human intervention. It uses a rotating roof top light radar system (aka LIDAR) that maps critical components of the road environment, including curves, signals, traffic lanes, vehicles, pedestrians and bicycles. It also maps cones and construction zones for avoidance. It has no driver controls, such as steering wheel or pedals. It is believed that driverless cars can reduce traffic accidents and congestion. But last November, a Google car was pulled over by the police for driving too slowly, which generated my research question ”will driverless cars improve traffic congestion?” My research is to estimate how driverless cars affect the traffic flow of freeways and city streets.

For example, take an intersection controlled by a traffic light , when the traffic light turns from red to green, it takes 1 second to 3 seconds for human drivers to perceive the change of the signal and react accordingly by switching pedals. For a driverless car, it only takes 0.3 seconds to do so. Driverless cars use sensors and cameras to detect the traffic lights.  They can communicate with the local controller that operates the traffic light. For advanced driverless cars, called connected vehicles, they can talk to each other exchanging information of location, speed and other parameters. Imagine if all the cars at the signalized intersection were driverless cars: They would all start at the same time without the human response delays. So the road can serve a larger amount of traffic in the same amount of time. In addition, driverless cars are equipped with collision avoidance technology, so if a regular motorist violated the red light, the driverless car would not enter the intersection and it would avoid the collision.

Based on my analyses, if all vehicles are driverless cars, capacity of the road will be doubled. This means that every city intersection would have twice as many lanes at no cost to the city.  But if in the future we only have 1% of driverless cars in traffic, traffic flow will not improve. If we have 5% driverless cars, congestion will improve by about 5% if they are regular driverless cars, or by 12% if they are connected driverless cars. So with 5% driverless cars, traffic flow will begin to improve in a noticeable way. However, if the cars are designed to drive conservatively, they will cause more delays than humans do.

To answer my research question, which is “will driverless cars improve traffic congestion?” the answer is that if driverless cars become dominant in the market and if they are designed to drive very closely to each other, then they will reduce traffic congestion, possibly by a lot. "