There are several reasons why widening highways is usually a futile strategy to combat traffic congestion. For one, highway widening projects are costly and time consuming. It has also been well documented that adding new capacity to highways creates induced demand, which essentially means it will generate more traffic on the road. Consequently, over time the widened highway gradually fills up with additional traffic until it reaches a threshold, and is congested again. Of course, just the principle of widening highways is flawed because it encourages driving, it’s unsustainable, and it raids funds for other major transportation projects that are much more sustainable, such as transit. However, research from the Sightline Institute points out that widening highways also leads to substantial increases in GHG emissions in the mid-to-long term.
Conventional dogma preached by road-widening enthusiasts claims that additional capacity will decrease GHG emissions by easing traffic congestion. According to Sightline, this limited benefit only holds true in the short term, if at all. In the medium-to-long term, however, adding one mile of new highway lane will result in an increase in CO2 emission by more then 100,000 tons over 50 years. To quantify that, at current rates of emissions, 100,000 tons of CO2 equals the 50-year climate footprint of about 100 typical U.S. residents.
Image: Sightline Institute
When are these people going to learn that a “predict and provide” approach to building highways is both counter-productive and unsustainable? It’s been addressed over and over and over again by researchers that widening highways such as the Turnpike, especially at its current capacity, does little but induce more driving demand while simultaneously justifying the auto-dependent sprawl it serves.
Lest we forget that such a project also takes years to finish and usually costs hundreds-of-millions of dollars — money that could be much better spent on transit improvements and maintenance of existing roadway facilities. Such policy is even more appalling within the context of climate change (especially with South Florida’s geography) and a threatened Everlgades ecosystem.
So, I encourage anyone who would like attend the open house tomorrow to go and voice your displeasure with any plan that will widen the Turnpike. Even better if you bring with you the studies I hyperlinked above to support your claims. Let these planners know that South Floridians are tired of wasting hundreds of millions of dollars on futile roadway projects that justify sprawl, do nothing to improve quality of life for Miami-Dade residents, and continue to leave commuters with little alternative to driving. Tell them you want to see sustainable alternatives that are transit-based.
The meeting information:
Thursday, September 27
5:30-7:30pm
Florida Dept. of Transportation District Six Auditorium
1000 NW 111th Ave, Miami
LISTEN TO THE LATEST TALKING HEADWAYS PODCAST
Find us on Facebook
Recent Comments
- Mark on FDOT: No Bicycle Lanes for Sunset Drive
- Anonymous on FDOT District 4 Bicycle/Pedestrian Coordinator
- Mike Arias on Friday Funny: The TIGER Grant
- Mike Lintro on City of Miami Public Hearing: Small Building Parking Exemption
- Anonymous on Follow Tri-Rail on Twitter
- Anonymous on Follow Tri-Rail on Twitter
Subscribe via Email
Recent Activity
Tags
Bicycle Bicycle Infrastructure bicycles bike lanes Bike Miami Days Bikes bikeway biking Brickell bus Calendar Climate Change Coconut Grove complete streets Congestion Cycling Downtown Miami Downtown Miami FDOT MDT Metromover Metrorail Miami Miami-Dade County Miami-Dade Transit Miami 21 Miami Beach Miami Dade Parking Parks Pedestrian Pedestrian Activity Pedestrians Pic o' the Day Public Transit Rickenbacker Causeway Sprawl Streetcar Traffic Transit Transit Oriented Development Transportation Tri-Rail Uncategorized Urban Planning