Did you know that there are three classifications for traffic barriers? Traffic barriers are roadside safety measures implemented to reduce motorist harm after leaving the roadway. The Federal Highway Administration (FHWA) categorizes roadside medians into three classifications: flexible, semi-rigid, and rigid. These classifications are defined by the deflection of the barrier when impacted by a…
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When you’re looking at designing (or redesigning) a roadway, you need to think first about the impact that project will have on the utilities surrounding the road. If you don’t, you’ll likely find yourself grinding to a halt when you encounter a utilities-related roadblock in your next project. Utilities are the lines, wires, and pipes…
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I recently had the opportunity to talk about my job as an Infrastructure Designer with a young member of my church. They had a lot of questions about the roadway design process, such as “do you guys just put dirt down and call it a day?” The simple answer is this: roadway design is a…
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Who doesn’t love to ride a bike or walk around their city? Have you ever thought about the planning that goes into making a street bicycle- or pedestrian-friendly? Historically, roads have been designed to get vehicles from point A to point B as quickly as possible, without a lot of regard for other road users…
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If you’re like me, when you hear the word “diet,” your first reaction isn’t the thought…sign me up! However, in transportation, it may often be an easy solution that provides a favorable outcome for all involved. A “Road Diet” is essentially a reallocation of space on an existing roadway to better meet the needs of…
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Have you ever wondered what that terrible noise and vibration are when you slightly veer on a roadway? Those noisy bumps are referred to as rumble strips, and they are formed when a ribbon of asphalt has been milled with a special tool. Rumble strips produce sound and vibration to alert drivers when they cross…
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In honor of National Roundabout Week, we’re sharing a throwback blog from 2016! A few years have passed since it was last published, but one thing remains the same – roundabouts are a proven safety countermeasure because they can substantially reduce crashes that result in serious injury or death. Roundabouts can improve safety, promote lower…
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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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Engineers and planners face a variety of challenges when planning and designing new roadways. Although many of these challenges apply to the widening and expansion of existing roads, certain obstacles are unique to roadways along new alignments. When planning for roadway design projects, it’s helpful to have a general understanding of potential barriers so delays,…
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