TrafficAuth is powered by OmniTrust (formerly INTEGRITY Security Services)
TrafficAuth is powered by OmniTrust (formerly INTEGRITY Security Services)
TrafficAuth-Mobile brings secure V2X participation to Android and iOS devices, enabling drivers, pedestrians, work-zone workers, fleet operators, transit vehicles, and emergency responders to exchange trusted safety messages through the National Mobility Interchange.
Secure V2X Capabilities on Android and iOS
TrafficAuth-Mobile is a native mobile application for Android and iOS that enables smartphones to participate in secure V2X communication.
The app connects mobile users to the broader TrafficAuth ecosystem, including the National Mobility Interchange, TrafficAuth-SCMS, and TrafficAuth-Portal. It allows users to receive trusted roadway safety information, broadcast their own safety presence, and access advanced features when authorized by an agency, fleet operator, or account manager.
TrafficAuth-Mobile was built as a native application on each platform to optimize performance, improve responsiveness, and take full advantage of the security, location, notification, and hardware features available on modern mobile devices.
IEEE 1609.2 Certificates and Digital Signatures
TrafficAuth-Mobile includes specialized security code that supports IEEE 1609.2 certificates and digital signatures for V2X message security.
This allows the app to sign messages it sends and validate messages it receives, supporting end-to-end trust between mobile devices, roadside infrastructure, vehicles, and network services.
The app automatically acquires and manages the SCMS certificates needed for secure operation. These certificates allow the TrafficAuth ecosystem to confirm that messages came from a trusted participant and that the message content was not altered in transit.
This is especially important for safety-related applications. A pedestrian safety message, work-zone worker alert, signal priority request, or emergency preemption request must be more than a simple data packet. It must be verifiable.
Protecting Credentials on the Device
TrafficAuth-Mobile takes advantage of the hardware security features built into modern Android and iOS devices.
These platform-level protections help safeguard secret keys from software-based attacks and reduce the risk that credentials could be copied, altered, or misused.
By combining mobile platform security with IEEE 1609.2 message security and SCMS-managed certificates, TrafficAuth-Mobile provides a secure foundation for mobile V2X participation.
Accurate Positioning for Safety Applications
TrafficAuth-Mobile supports precision location features available in modern mobile devices and supported by major network carriers.
Accurate location is essential for many V2X safety use cases. A worker near an active lane, a pedestrian approaching a crosswalk, or a fleet vehicle requesting signal priority all depend on location data that is timely and reliable.
TrafficAuth-Mobile uses available device and network capabilities to support safety applications that depend on position, movement, and proximity.
Basic V2X Awareness for Mobile Users
The free version of TrafficAuth-Mobile provides entry-level V2X safety functionality for users participating through the National Mobility Interchange.
By default, the app supports visibility of approaching vehicles that are sending Basic Safety Messages, or BSMs. These messages may be sent directly over the network or relayed from 5.9 GHz Direct V2X infrastructure through a connected intersection.
The free version also supports generation and transmission of Pedestrian Safety Messages, or PSMs, over NMI.
This allows a mobile user to participate in V2X safety services without needing dedicated vehicle hardware.
Making Vulnerable Road Users Visible to V2X Systems
TrafficAuth-Mobile can generate and send Pedestrian Safety Messages through the National Mobility Interchange.
PSMs allow pedestrians and other vulnerable road users to be represented in the V2X ecosystem, helping applications and connected infrastructure understand that a person may be present near the roadway.
Depending on the deployment, PSMs can support use cases such as:
For privacy and safety, advanced deployments can apply policies that limit when and how PSMs are generated, such as enabling worker-specific messages only within an active work zone.
Special Capabilities for Approved Users
TrafficAuth-Mobile includes advanced modes that are available only to authorized users.
These capabilities are controlled through the TrafficAuth ecosystem and are tied to permissions encoded in the SCMS certificates issued to each device. This ensures that users cannot simply enable advanced capabilities in software without receiving the proper authorization.
Advanced authorized modes may include:
Trusted Presence for Roadway Workers
Authorized workers can be granted permission to send special PSMs indicating that they are active work-zone workers.
This allows TrafficAuth-Mobile to support work-zone safety applications where worker presence, location, and movement may be used to improve situational awareness.
For example, a worker in an active work zone may use TrafficAuth-Mobile to participate in a safety environment that includes connected cones, roadside sensors, TrafficAuth-enabled infrastructure, and NMI message routing.
The TrafficAuth work-zone concept includes mobile worker participation, signed PSM messages, worker presence awareness, and routing through TrafficAuth services for connected safety use cases.
Secure Requests for Critical Response
Emergency vehicle operators can be granted permission to request signal preemption where supported by the DOT or roadway operator.
Preemption is a safety-critical capability and requires strong access control. TrafficAuth-Mobile supports this model by relying on SCMS-issued credentials that encode the permissions assigned to the device and user.
This allows DOTs and public safety agencies to define which users are authorized for emergency preemption and under what conditions those permissions apply.
Fine-Grained Control for Account Managers
TrafficAuth-Mobile permissions are managed through TrafficAuth-Portal.
Authorized account managers can view users, manage permissions, and control which advanced features are available to each device or user.
This allows agencies and fleet operators to manage access at a fine-grained level. For example, a manager may authorize one group of users for work-zone worker mode, another group for transit signal priority, and a smaller set of emergency responders for preemption.
Because permission properties are encoded in SCMS certificates, the app cannot upgrade itself to a higher privilege level. Advanced permissions must be granted through the proper credentialing process.
Secure Mobile V2X in Five Steps
1. The User Installs TrafficAuth-Mobile
The app is installed on an Android or iOS device.
2. The App Acquires SCMS Certificates
TrafficAuth-Mobile automatically obtains and manages the SCMS certificates required for secure V2X message signing and validation.
3. The App Connects to NMI
TrafficAuth-Mobile exchanges V2X messages through the National Mobility Interchange.
4. The App Sends and Receives Trusted Messages
The app can receive messages such as approaching vehicle BSMs and can send PSMs or other authorized messages based on user permissions.
5. Advanced Features Are Enabled by Authorization
Account managers use TrafficAuth-Portal to assign advanced permissions. Those permissions are encoded in certificates so only properly authorized devices can access restricted V2X functions.
Native Android and iOS Apps
TrafficAuth-Mobile is built natively for each platform to optimize performance, reliability, and access to device capabilities.
IEEE 1609.2 Security
The app supports certificate-based V2X message signing and validation using IEEE 1609.2 security.
Automatic Certificate Management
TrafficAuth-Mobile automatically acquires, renews, and manages SCMS credentials needed for secure operation.
NMI Integration
The app works with the National Mobility Interchange to send and receive Network V2X messages.
BSM Visibility
Users can receive awareness of approaching vehicles sending Basic Safety Messages through network or relayed V2X channels.
PSM Generation
The app can generate and send Pedestrian Safety Messages through NMI.
Precision Location
TrafficAuth-Mobile supports modern precision location features available through mobile devices and carrier-supported positioning services.
Hardware-Based Key Protection
The app uses platform security features on Android and iOS to help protect secret keys from software-based attacks.
Authorized Advanced Modes
Advanced features such as work-zone worker mode, signal priority, and signal preemption are available only to authorized users.
Portal-Based Permission Management
TrafficAuth-Portal allows account managers to view users and control permissions for advanced app features.
Expand V2X Participation
TrafficAuth-Mobile allows DOTs to include workers, field staff, fleet operators, contractors, and mobile users in V2X safety services.
Support Work-Zone Safety
Authorized workers can participate in work-zone safety applications using mobile devices they already carry.
Enable Mobile Pilots and Deployments
Agencies can test and deploy V2X services without requiring every participant to install dedicated vehicle hardware.
Maintain Security and Control
SCMS certificates and portal-managed permissions ensure that advanced features are available only to authorized users.
Improve Vulnerable Road User Awareness
PSM support helps make pedestrians, workers, and other vulnerable users visible to connected safety applications.
Add V2X Without Replacing Vehicle Systems
TrafficAuth-Mobile can provide a practical entry point for fleets that want to participate in V2X services without immediate embedded integration.
Support Signal Priority Where Approved
Transit and fleet operators can request signal priority when authorized by the DOT and supported by the intersection.
Support Emergency Preemption
Emergency vehicle users can be granted preemption capabilities under strict permission controls.
Improve Driver Awareness
Vehicle, pedestrian, work-zone, and infrastructure messages can support better situational awareness in connected areas.
A Practical Bridge to Scalable V2X Adoption
V2X safety becomes more valuable as more participants join the ecosystem.
TrafficAuth-Mobile helps accelerate adoption by bringing secure V2X capabilities to Android and iOS devices. It allows users to receive approaching vehicle awareness, send pedestrian safety messages, participate in work-zone applications, and access advanced DOT-approved capabilities such as signal priority and emergency preemption.
With native mobile performance, IEEE 1609.2 security, automatic certificate management, precision location, hardware-based key protection, NMI integration, and TrafficAuth-Portal permission control, TrafficAuth-Mobile gives DOTs, fleets, and public safety operators a practical path to secure mobile V2X participation.
