TrafficAuth is powered by OmniTrust (formerly INTEGRITY Security Services)
TrafficAuth is powered by OmniTrust (formerly INTEGRITY Security Services)
Connected transportation networks only work when every device can be trusted. TrafficAuth helps DOTs establish a secure, standards-based trust foundation for V2X infrastructure, enabling authenticated messages, managed device permissions, and operational visibility across smart city deployments.
Smart city transportation systems are becoming more connected, more automated, and more dependent on real-time data from devices deployed across the roadway network.
Roadside units broadcast intersection data. Vehicles request signal priority. Work zones publish temporary safety alerts. Transit, emergency response, freight, maintenance, and connected infrastructure systems exchange information across direct radio links, cellular networks, cloud services, and traffic management platforms.
For DOTs, the challenge is not simply connecting these systems.
The challenge is knowing which devices to trust.
A connected transportation network must be able to confirm that a message came from an authorized device, that the message was not altered, and that the device is permitted to perform the action it is requesting. Without that foundation, V2X systems cannot scale from pilots to operational infrastructure.
TrafficAuth-SCMS enables DOTs to establish that trust.
DOTs are deploying increasingly complex V2X environments that may include equipment from many different vendors, installed across many different operating environments.
A single regional deployment may include:
Each device may have a different role. Each role may require different permissions. Each message may need to be trusted by other systems before it can be used.
That creates a practical operating problem for DOTs: how do you build a V2X network where devices from multiple vendors can communicate securely, without giving every device the same level of authority?
TrafficAuth-SCMS addresses this challenge by providing a standards-based credential foundation for trusted V2X communication.
In a V2X environment, messages can influence driver warnings, traffic signal behavior, vehicle decisions, emergency response, freight movement, and roadway safety applications.
That makes authenticity critical.
A vehicle should not be able to request signal preemption unless it is authorized. A roadside device should not be trusted unless it has valid credentials.
A work-zone alert should not be accepted if it comes from an unknown or spoofed source. A cloud-distributed message should carry the same trust expectations as a directly broadcast message.
The Security Credential Management System, or SCMS, is the trust infrastructure that makes this possible. U.S. DOT materials describe SCMS as a critical component of the connected vehicle environment, using a PKI-based approach optimized for trusted V2X communication.
TrafficAuth-SCMS brings that trust model into practical DOT deployments.
TrafficAuth-SCMS is the DOT-focused configuration of the TrafficAuth Security Credential Management System. It supports the certificate-based trust model needed for both Direct V2X and Network V2X deployments.
The service supports IEEE 1609.2 certificates, which were created for secure V2X message exchange in high-speed, low-bandwidth transportation environments. This allows devices to digitally sign messages so receiving systems can verify where the message came from and whether it has been changed.
TrafficAuth-SCMS also supports the standards and interfaces needed by modern and legacy deployments, including IEEE 1609.2.1 for hosted SCMS interaction and the legacy CAMP interface for older V2X systems.
For DOTs, this matters because most real deployments are mixed environments. Agencies need to support new devices, existing devices, multiple vendors, and evolving standards without redesigning the trust model every time the network expands.
For many DOTs, V2X trust infrastructure is not only a technology decision, but also a procurement, security, and critical infrastructure decision.
TrafficAuth-SCMS is developed, maintained, hosted, and operated in the United States. This provides DOTs with a domestic trust platform for securing connected transportation systems and helps address concerns about dependency on foreign-controlled infrastructure for safety-critical roadway communications.
The TrafficAuth family of solutions is the only SCMS platform currently available from a U.S. company that is entirely developed, maintained, hosted, and operated in the United States.
A V2X certificate proves that a device belongs to a trusted ecosystem. But DOTs also need to determine what that device is allowed to do.
That is where smart city infrastructure becomes complicated.
A roadside unit may be authorized to broadcast SPaT and MAP messages from a specific intersection. A transit vehicle may be allowed to request priority only on approved routes. An emergency vehicle may require broader permissions. A work-zone device may be trusted only within a temporary project boundary. A Network V2X application may distribute messages only for authorized safety zones.
Without a clear trust and permission model, DOTs risk building networks that are connected but difficult to govern.
TrafficAuth-SCMS helps DOTs apply trust at the device level, so each participant can be authenticated and associated with the role it is expected to perform.
As V2X deployments grow, DOT teams need more than certificates in the background. They need visibility into the health and status of the connected device ecosystem.
TrafficAuth-Portal provides an interactive management environment where authorized users can monitor devices, review system status, anticipate issues before they affect service, and diagnose problems after events occur.
For DOT operators, this helps turn V2X trust management into an operational capability rather than a hidden technical process.
TrafficAuth-Portal can help agencies answer practical questions such as:
This visibility becomes increasingly important as DOTs move from isolated pilots to corridor, regional, and statewide deployments.
DOTs are no longer deploying only one type of V2X system.
Some use cases require low-latency direct communication over the 5.9 GHz safety spectrum. Others are better suited to cellular, cloud, or MQTT-based Network V2X distribution. Many modern deployments will use both.
TrafficAuth-SCMS supports a common trust foundation across these environments, helping DOTs secure messages whether they are exchanged directly between field devices or distributed through network services.
This is especially important as agencies connect intersections, work zones, fleet systems, emergency services, mobility platforms, and cloud-based data exchanges into a broader transportation operating environment.
Smart transportation systems are only as reliable as the data they use.
As DOTs expand V2X deployments, they need a way to trust messages from devices they do not physically control every moment, from vendors they may not directly manage, and from systems operating across both direct and network communication paths.
TrafficAuth-SCMS and TrafficAuth-Portal help DOTs address that challenge by combining standards-based V2X credentials, domestic SCMS infrastructure, and operational visibility.
The result is a stronger foundation for connected transportation: trusted devices, authenticated messages, managed permissions, and a clear path from pilot deployments to smart city infrastructure at scale.
