North Tarrant Express, Ft. Worth, Texas

This was an interesting nugget of information this morning… the speed limit on the North Tarrant Express has been raised to 75 miles per hour, whereas the general purpose lanes are 65 mph.  Given the design conditions in the corridor, including full separation of traffic, the higher speeds were justified by the Texas Department of

I-635 Managed HOV Lanes, Dallas, TX

I must admit that I find the politics of Public Private Partnerships (P3) in the Dallas / Fort Worth area to be quite complex.  Known locally as Comprehensive Development Agreements (CDA), the P3-oriented process has successfully delivered operational Express Lane facilities — coupled with comprehensive corridor reconstruction — on various parts of I-635, I-820, SH-121,

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