Is the buckle too tight? Is it tight enough? My husband and I were suddenly aware of how little we knew as we packed our daughter into her car seat for the very first time. According to the CDC, an estimated 46 percent of car seats and booster seats are misused. As a first-time parent,…
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You may know that mile markers, or mileposts, alert drivers of their location along an interstate or highway, but did you know about the other functions they serve? Mile markers are used to indicate the distance traveled within a state and the distance to a destination, such as a city or a town. The mileage…
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Many Southern Middle Tennessee drivers have already traveled through the work zone at Exit 46 on Interstate 65 (I-65) in Maury County. The construction will last approximately three years, but the process started nearly two decades ago. The Tennessee Department of Transportation (TDOT) contracted with Sain Associates in 2002 to begin planning for modification of…
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Did you know a storm drain is the portion of a highway drainage system that receives surface water through inlets and conveys the water through storm pipes to an outlet? When determining pipe size, one must consider factors such as flow and elevation. A storm drain is usually a circular pipe because it is structurally…
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There are over 1.8 million registered electric vehicles in the United States, a threefold increase from 2016. As electric vehicle (EV) batteries become lighter and the travel range increases, electric vehicles will become increasingly prevalent across the country. The rise in electric vehicles on our roadways has led to an increased demand for EV charging…
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Every project in its early planning and engineering stages must take erosion and sedimentation control into account. From 250,000 square-foot industrial facilities to small residential projects – there are practices in place and rules to follow on a state-by-state basis related to keeping excess soil from traveling into water bodies. Erosion is defined as the detachment…
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Have you ever wondered what keeps a car from sliding off the road when you go around a curve? Or, have you ever noticed that it’s unnecessary to reduce speed for safety or comfort purposes when driving through a curve, even at high speed? The reason is superelevation. Superelevation is the banking of the roadway…
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Before a new development can be built, the local government will often require a traffic impact study (TIS) to be performed. But what exactly goes into a TIS? The purpose of a TIS – also called a traffic impact analysis (TIA) – is to assess the expected traffic impacts to the roadway network surrounding a…
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Did you know there is an airport in Meridianville, Alabama? The Huntsville Executive Airport (HEA) is a little-known public airport in north Alabama. It is owned by the Madison County Executive Airport Authority and is Huntsville’s most convenient airport for private aviation. HEA has several tenants that lease hangar space at the airport, including Yulista…
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Did you know that pavement markings are not as simple as you might think? Pavement markings are used to convey many different messages to the driver, signaling which part of the road to use and where passing is allowed. Pavement markings use two primary indicators – color and line style – to relay information to…
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