Tag Archives: traffic engineering

Working list – Diverging diamond interchanges in the USA

A working list of diverging diamond interchanges (DDIs) is listed in alphabetical order by full state name under each calendar year. The first DDI in the United States opened in 2009. This style of interchange design cuts down the number … Continue reading

Posted in Cars, cities, engineering, geography, government, health, highways, history, infrastructure, land use, logistics, Maps, planning, product design, spatial design, technology, tourism, Trade, traffic, transportation, Travel, trucking, urban planning | Tagged , , , , , , , , | 2 Comments

American and Canadian Cities with the Most Roundabouts – UPDATED

Guest post by Dan T. – Thank you, Dan! [Note: To most people, the terms traffic circle, rotary, and roundabout are synonyms, but not to traffic engineers. Engineers usetraffic circle as a generic term for all circular intersections, while rotaries … Continue reading

Posted in Canada, Cars, cities, economic development, engineering, environment, Europe, geography, health, highways, history, infrastructure, land use, Maps, North America, placemaking, planning, spatial design, States, Statistics, traffic, transportation, Travel, urban design, urban planning | Tagged , , , , , , , , , , | Leave a comment