I was a huge fan of the roundabout installation on Hillsborough St. near the NC State Bell Tower. It was well thought out, it reduced delay, and it was a pleasure to drive in. For a traffic engineer. Continue reading →
A friend sent me a link to a recent WRAL article posted yesterday about a fatal collision in Cary on Sunday, February 12th1. Tragically, both passengers in a left-turning vehicle died when the driver crossed the path of another vehicle. This is terrible and my condolences go out to those affected by the incident. I also feel for safety engineers everywhere who feel the emptiness of failure at each reported fatality2, especially the highway safety professionals who work in this jurisdiction. However, as an engineer and scientist it is of utmost importance to step back and remember a few things about working within the confines of the real world: with limited tax funds, systems are imperfect and not every collision is preventable. Continue reading →
So it seems there were a few damages from the Virginia earthquake earlier this week. The biggest damages on the news? The National Cathedral and the Washington Monument. The Washington Monument suffered some cracking at the very top and has since been closed indefinitely to the public until damages can be assessed. As for the National Cathedral, gargoyles, spires, buttresses, and walls cracked, shifted, or fell and shattered. Other homes and businesses near the epicenter were damaged as well.
While damages under 6.0 earthquakes are rare, they do indeed occur, especially in a region less known and under-designed for quakes. In fact, the area falls in a zone of very small seismic risk (see the 2012 International Building Code Map, courtesy of USGS), which is a big part of the problem. Another part of the problem is the age of these structures. Newer buildings and building methods are much safer than they used to be in this regard, but many older buildings will suffer problems, especially since there is little desire to improve them and little funding to do so. Continue reading →
Two weeks ago, an unfortunate collision occurred at a railroad grade crossing in Maine. Reuters reports that a dump truck was hit by an Amtrak train and the driver was fatally wounded. Four passengers aboard the train were injured as well. Terrible. At-grade railroad crossings are some of the most dangerous intersections we have on our road system and they should be avoided whenever possible. Fortunately, many public agencies are fully aware of hazards associated with them and are taking steps to fix them. Here is a list of policies in the United States associated with at-grade crossings, published by the Federal Highway Administration. If you live in North Carolina, rest assured that NCDOT can and will use its power to remove, abandon, close, or regulate all railroad grade crossings. That is, if politicians don’t try to stop the sensibilities of the engineers there.
You might also be interested to know that railroad companies are also very aware of these hazards. CSX, for example, is “firmly opposed” to at-grade crossings and supports policies in place by the USDOT and state agencies to limit their use. You can read more about their leadership in this area on their website.
It’s a shame to see collisions on train tracks. Look both ways when you have to cross tracks and don’t, under any circumstances, try to “beat” the train or drive around protective barriers. It’s not worth it.
I was reading this News & Observer article today about the new roundabout on Hillsborough St in Raleigh, NC. Raleigh Police have cataloged more than 40 collisions at a new roundabout installation at it seems at least a few people have some ruffled feathers.
At first this number seems high, but it’s important to remember a few key thoughts about the safety, design and installation of new traffic patterns. Continue reading →
For my Highway Safety graduate level course at NC State, I conducted a field study at the intersection of Glenwood Ave and Peace St in Raleigh, NC. The study evaluated the current status of field conditions, conflicts, previous collision reports, and recommended a few counter measures that might reduce conflicts at the intersection.
I’m really enjoying the class. If you’re interested in reading the study, I’ve attached it to this post.
Mike Roselli is a Civil Engineer and consultant, licensed in the States of NC, SC, GA, and FL, and is focused on providing land development services to clients building in the Triangle Area. He currently resides in Cary, NC.