The only live smartphone-verified HOV deployment in North America. Running for years on the TEXpress Lanes in partnership with the North Central Texas Council of Governments. The proof point every other deployment leans on.
Carma's groundbreaking technology makes it easier for toll operators to keep track of HOV drivers and reward them for doing their part for the environment. In Dallas–Fort Worth, where Carma has successfully deployed its technology already, HOV drivers are now reliably identified and tolled at half the rate of other drivers.
Mark Compton
Before smartphone verification, more than 30% of vehicles in the DFW TEXpress HOV lanes were single-occupant cheats. After GoCarma, that number fell below 2%. The lane stopped being a free-for-all and started being what it was designed to be.
This isn't a pilot. It's a multi-year operational deployment carrying real revenue and real eligibility. The numbers below are what the system has done at production volume.
Automating the process of verifying occupancy on these roadways also eliminates the need for roadside enforcement, which makes the road safer and less congested. All in all, this is an innovative solution that we're sure will catch on among tolling operators across the country.
Mark Compton
The DFW deployment uses smartphone-to-smartphone coordinated proximity to verify HOV occupancy. Two or more phones in the same vehicle, traveling the same speed and trajectory, equals a verified HOV trip. No cabin cameras, no thermal imaging, no roadside hardware. The privacy model every agency RFP now asks for.
I can't speak highly enough about working with Carma. The company understands the industry and offers unrivaled partnership.
Dan Lamers
NCTCOG, the regional MPO for the Dallas–Fort Worth metroplex, has been the program's anchor partner from launch. The TEXpress system spans 100+ miles of managed lanes across multiple counties; the GoCarma deployment integrates into that network without changing its physical footprint.
When Seattle's WSTC ran the SR 520 pilot, the comparison wasn't to a theory. It was to a system already running at production scale in another state. When Louisiana procured the I-12 HOV conversion, the operational reference was DFW. Every smartphone-tolling and HOV conversation in U.S. tolling traces back to this corridor.
DFW is the staging ground for capability transfer to other regions. CDM Smith's recommendation to Washington that smartphone HOV verification be tested on its express toll lanes maps directly onto the DFW capability. The Louisiana I-12 conversion will run on the same software. So will the next wave.
