In 2014, Carma launched the world's first real-world use of real-time ridesharing technology to verify vehicle occupancy for toll-road rebates — on the Central Texas Regional Mobility Authority's 183A corridor in north Austin. Federally funded. Independently evaluated by the Texas A&M Transportation Institute.
Tolling authorities had been pricing HOV access for years — but verifying it was the hard part. Roadside cameras, in-vehicle infrared, beam-break sensors: all expensive, all imperfect. Austin proved that two phones moving together, paired in real time, could verify a carpool to a standard a tolling authority would honour — and pay rebates against.
An FHWA Value Pricing Pilot Program (VPPP) grant — awarded jointly to the Texas Department of Transportation, the Central Texas Regional Mobility Authority, and Avego Corporation (now Carma). Independent oversight by the Texas A&M Transportation Institute.
Drivers carpooling along 183A or the Manor Expressway / Hwy 290 received toll rebates verified by Carma — without a roadside HOV lane. 2-person carpools received a 50% rebate on the toll; 3+ person carpools received the full toll back, reimbursed against their TxTag account.
The Austin pilot ran the same coordinated-proximity verification that became the foundation of every Carma deployment since — applied for the first time to a live tolling reimbursement.
After five months of community outreach in a single 3,000-home Austin neighbourhood — Block House Creek, off the 183A corridor — the Austin pilot was the fastest-growing program Carma had ever run. Membership along 183A was doubling month-over-month and more than a quarter of registered users were actively carpooling on the corridor.
An independent evaluation by the Texas A&M Transportation Institute confirmed significant adoption and retention gains for users who qualified for the toll discount — the first real-world evidence that pricing plus smartphone verification could move SOV behaviour. CTRMA expanded the pilot from 183A onto the Manor Expressway / Hwy 290, and TxDOT discussed extending to SH 45 and SH 130.
This technology allows us to test the impact of specialty pricing as an incentive to drivers to use a toll Expressway, and may provide a way to verify the number of passengers in a qualifying carpool.
The Austin pilot wasn't won with billboards. Carma's team focused on the Block House Creek neighbourhood — a 3,000-home community of long-haul commuters straddling the 183A corridor — and spent five months showing up where the residents already were.
The Austin launch was covered by the city's full media stack — broadcast, print, public radio, and the business press.
Original PR Newswire release: Carma Carpooling Launches in Austin · 27 February 2014.
