Category: Transportation Engineering

Bike Lanes, Intersection Improvements Can Change Urban Barrier into Friendlier Corridor

By Tristan Hickman, PE While heavy traffic is part of living in the big city, communities need not sit idly by as their arterial streets become unnecessarily clogged by outdated technology – or begin to feel like dangerous canyons that pedestrians and bicyclists fear to even attempt crossing. Traffic engineers hold the key to streets… Read More »

What’s a Mini Roundabout, and Why Is It Effective?

One type of roundabout design starting to gain traction in the United States is the mini roundabout, which features a reduced diameter (50 to 90 feet) with a traversable central island, allowing buses and trucks to travel over the top of it. Passenger vehicles are expected to use the circular roadway around the central island.Read More »

One-Way or the Other? Two-Way Traffic Conversion Requires Study

By Alexander Cowan, PE, and Alexandria Motl, PE Alexander Cowan Alexandria Motl A drive through the downtown area of many American cities includes time spent on one-way streets. Cities have used short segments of one-way traffic for hundreds of years to try to improve traffic flow and move higher volumes of traffic along downtown arterials.… Read More »