Wednesday, June 22, 2016

The Autobahn: Where "Speed Kills" Dies

The German autobahn is a traffic safety paradox. Countries like Australia, the US and the UK have made freeway speed control a major objective of their traffic safety code. Many high class roads in the US are limited to 55 mph and sometimes lower speeds. The top BBC television program Top Gear has scored big laughs with US speed limits.

Speed kills they say.  That can be true. In a case of loss of control or other accident conditions, a modest impact accident can become a severe or fatal accident if the speeds are high.  But speed itself does not kill. In a recent (June 2016) presentation at the German federal department of transportation that I witnessed in Berlin, the statistics clearly showed that the Autobahn is the safest German road.  Germany in general has better traffic safety that the US.  But the speeds on the Autobahn are insane.

Recently I drove about 1,000 km on several German autobahns connecting Berlin and Frankfurt.  When the road was not wet, I was typically using the middle lane and cruised at 150-160 km/hr for long stretches where no limits were in effect. That's 93-100 mph in a loaded car with a family of four!

But on occasion like the one below I'd move up to 176 km/hr or 109 mph and get passed quickly by a Hyundai SUV as in the instance below. The speeding of Hollywood car chases is common place with common cars on the German autobahn.


Note in the picture that the dashboard indicates to me the speed limit in the sign with the red circle and three dashes.  The dashes mean that no speed limit is in effect on that segment of the road. The dashes are replaced with applicable limits, most commonly 120 or 90 km/hr in sections with curves or other difficulties.  The Germans were very cognizant of these limits and adhered to them. On occasion I'd drive a little faster on those restricted stretches to pass the Porsches so I can enjoy the whoosh of being passed by them minutes later... Even when did 194 km/hr (120 mph) they zipped by me at , I'd guess, 155 mph which is a common governed speed limit (based on the tire type fitted).


And nobody died; not even close.  It was fun to see that the next city was 50 miles away and arrive there in about half an hour!

Sunday, May 15, 2016

$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. 

Saturday, May 7, 2016

Engineering experts raise quality concerns over Honolulu’s rail construction

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