How advanced engineering and coding make traffic safer

Geospatial Data Visualization

One of the platform’s standout features is its ability to collect and visualize geospatial data. This involves mapping the locations of all connected devices and displaying the flow of Vehicle-to-Everything (V2X) messages in real-time. This visualization is crucial for traffic operators to understand and manage traffic dynamics effectively. The backend systems supporting this feature require advanced geospatial data processing and real-time analytics.

Centralized Device Management

Commsignia Central provides centralized maintenance and monitoring of Vehicle-to-Everything (V2X) devices. Road operators can remotely configure, monitor, and manage roadside units (RSUs) and onboard units (OBUs), ensuring they operate efficiently. This remote management reduces the need for on-site maintenance, saving time and resources. The platform’s ability to send real-time alerts and notifications about device status helps operators maintain high service levels and quickly address any issues.


Why is this better for cities?

Customers see the value of this solution not only in the ability to remotely manage RSU devices centrally and perform settings and upgrades on multiple units simultaneously, but also in the added value of the data extracted and processed by the system, which is further used to increase transportation safety.
– Guinevere Szabó
Key Account and Channel Manager

Scalable Messaging Infrastructure

Commsignia Central offers a streamlined way to create and deploy V2X messages to inform road users about traffic events or hazardous conditions. This process involves complex messaging protocols and real-time data integration to ensure timely and accurate information dissemination. The system’s architecture supports scalable message deployment, capable of handling varying traffic volumes without compromising performance. Implementing this feature demands deep knowledge of network protocols and scalable software architecture.

Cloud and On-Premise Deployment Options

Commsignia Central can be deployed on both cloud and on-premise infrastructures, each with its own set of technical requirements. The cloud deployment option offers dynamic scalability and eliminates vendor lock-in, ensuring the system can grow with increasing demand. On-premise deployment, on the other hand, requires direct access to the hardware and regular updates managed by the customer. Both deployment models necessitate a thorough understanding of server management, cloud architecture, and cybersecurity protocols to ensure robust and secure operations.

We are constantly building, refining and improving the Commsignia Central platform. And if you’ve gotten this far down in the text, we have a feeling there’s something here that caught your attention. So just click here and let’s talk about it. We’d love to hear from you.

Prioritisation to improve bus transit

Public transport passengers want reliable schedules, frequent services and good prices. Transit agencies can easily meet these demands by using Transit Signal Priority (TSP) to improve travel times and reduce fuel consumption by eliminating idling at intersections. By choosing the right solution they can do much more for their customers.

Giving priority to buses is nothing new – it’s been used for more than 50 years. What is new is the reliability and versatility of V2X-based systems compared to legacy infrared beacons.

V2X communication works over a dedicated radio frequency in all weather conditions, from behind objects or around street corners. Connected buses continuously communicate with the roadside infrastructure so the system react to events in real time.

“Our V2X-based TSP still helps the bus even when it’s on the dedicated lane to get a green light in time as opposed to just randomly hitting the green and the red based on the normal timing cycle.” – Blaine Leonard told us for our blog post when we asked about the bus lane project of the Utah Transit Authority.

Connected vehicles that don’t spend much time idling at signalized intersections can decrease their fuel consumption by as much as 22 percent. TSP enables even more significant improvements in emmissions and delay times.

This permanent V2X communication channel between the buses and the infrastructure can also be used to improve road safety. Bus drivers can be alerted of vulnerable road users in the vehicle’s blind spot, including those who are in a hurry to catch their ride.

Public transport blocked by snow in winter? Add V2X onboard units to the city’s snowplow fleet to clear the road before the buses with high priority, using the same V2X infrastructure.

Cities and travel agencies can benefit even more from having a digital V2X transport infrastructure that improves transit efficiency, traffic conditions and road safety. To learn more, contact Gary Brady who will guide you through the details.

Protected bus lanes in a nutshell

– Buses get a green light from the Traffic Light Controller via V2X technology

– V2X uses GPS and more advanced localization services to determine the position of the buses

– V2X works without a line of sight and weather-proof.

– Traffic Light Controllers get real-time data from authorized buses to adaptively create protected corridors.

– Cities can use the same V2X deployment for multipole use cases to improve road safety for Vulnerable Road Users

– Buying new roadside cameras, sensors and traffic light controllers or integrating existing ones with V2X both works well

– V2X and smart sensors provide more detailed traffic data than anything before
Making V2X part of everyday operations brings the most out of it

Facts & Figures
– Active TSP can reduce transit delay significantly. In some cases, bus travel times have been reduced around 10%, and delay was reduced up to 50% at target intersections.

How Transit Signal Priority (TSP) Works?

Buses, traffic lights, and even sensors can work together using C-V2X technology.

The image shows Smart Intersections equipped with V2X RSUs, cameras, intelligent Traffic Light Controllers, and V2X-enabled buses. The buses communicate with the Traffic Light Controller to coordinate the phase with the movement of the bus. One of the buses is on a bus lane, right after getting a green light and passing through the intersection. Other buses travel on normal lanes. At the same time, cameras help bus drivers to see pedestrians who get the green light at the same time as them – in the same direction – but cross each others’ path behind the curve.

Vulnerable Road User Protection

Everybody wants predictable and safe travel options

Building a safer physical road infrastructure requires a huge investment, and agencies often apply for public funds to implement their plans. Thanks to funds such as the SMART Grant, these efforts can be combined with digital solutions to achieve more impactful and longer lasting improvements.

One of the easiest ways to upgrade an intersection is to install a modern Traffic Light Controller, connect it to the network, and add state-of-the-art Vehicle-To-Everything (V2X) technology. With the V2X in place, cities and other infrastructure owners and operators (IOOs) can upgrade their vehicles fleets with connectivity and use a range of safety and efficiency features to prevent traffic conflicts and protect vulnerable road users. Even at intersections, where the most complex interactions occur.

Commsignia is working with carmakers, bicycle manufacturers and mobile network operators to build up the operating system of connected traffic. This means, for example, installing V2X on cars and bicycles and providing data management tools to IOOs, putting an emphasis on interoperability with existing TMC tools.

But the roll-out of V2X on vehicles is gradual. We cannot expect all cars, pedestrians and cyclists to be equipped with V2X devices that actively communicate with the cloud or the TMCs – at least not all at once. 

It’s very important to focus on non-connected vulnerable road users, digitizing them with the help of sensors.

Commsignia works with many sensor provider companies such as Bosch, Teledyne, Smartmicro or Velodyne to integrate their cameras, lidars, radars and other devices with our V2X roadside units. V2X is a future-proof road safety investment that provides instant access to advanced traffic services. 

Not only for VRUs

One example of such advanced service is the Transit Signal Priority (TSP) and Green Light Optimal Speed Advisory (GLOSA) application. At first glance it may seem like an optimization, a mobility service. Sure, it will optimize traffic, as TSP with V2X can help buses, ambulances, fire trucks and urban maintenance fleet vehicles move through signalized intersections faster by providing them a green wave. It also helps reduce operating costs.

An independent study made by the Virginia Tech states that GLOSA brings about 22.1 percent saving on fuel and 6.1 percent less travel time.

Optimization often comes with indirect safety benefits. When snow plows with priority do their job faster, fewer people will travel on slippery roads. Garbage trucks cause less disruption in traffic, and less frustration in drivers, so they will keep focusing on driving. And here’s a very obvious one: prioritized ambulances get to the injured people faster, which can truly save lives.

The same priority service can also be a practical tool in supporting VRUs. It can be used to automatically switch to a free crosswalk signal, or maintain a longer signal for safe crossing when sensors detect people on the pavement. V2X performs particularly well in special traffic situations where VRUs are involved. It is worth cooperating with road maintenance companies and local institutions to exploit the potential of V2X. It is possible to set up temporary speed limits when kids arrive at school, and when there are actually people busy in a road work zone. 

Commsignia enables urban fleets retrofitted with V2X, such as ambulances and snow plows, to receive these notifications in the same way as V2X-equipped cars and bikes.

It is always a matter of careful planning to ensure that the V2X infrastructure is set up correctly and does not cause disruption elsewhere. Commsignia Central data and device manager platform can provide insights into potential conflict zones to help planners in optimizing traffic and improving the built infrastructure where it is most needed.

At Commsignia, we are committed to improving mobility for all by providing our partners with cutting-edge innovative V2X software, hardware and services. To find out more about the endless potential of a connected ecosystem and V2X technology click here to contact us today. 

Off the shelf features of V2X

  • connected urban fleets receive alerts about VRUs nearby
  • works without a line-of-sight on a radio frequency dedicated to road safety
  • integration with traffic light controllers used in the US
  • easy deployment, installation and maintenance
  • V2X-enabled vehicles can be notified of 
    • changes in road conditions, when weather makes driving dangerous
    • objects or stationary vehicles on the road
    • emergency braking multiple cars ahead in the same lane so drivers can slow down instead of hard braking

Work Zone Safety
Virginia Case Study

Protecting pedestrians and bikers on the roads is a particularly important topic in the area of vehicle communications, and innovative car manufacturers like Audi are recognizing that V2X technologies allow them to prevent collisions with vulnerable road users – especially in road work zones. In addition to safety V2X allows drivers to enter intersections more confidently, knowing in advance when the traffic lights turn red.

Commsignia and Audi are collaborating with Qualcomm, American Tower Corp., Virginia Tech Transportation Institute (VTTI), Traffic Technology Services, and the Virginia Department of Transportation (VDOT) in deploying cellular vehicle to everything (C-V2X) devices on the Virginia Smart Road to improve work zone safety, offer new services to customers and develop new business models with public and private sectors involved.

Traffic signal information use case is building on Audi’s already established Traffic Light Information (TLI) service, that shows the time until the lights turn green. The new roadside infrastructure is sending low latency C-V2X messages to the Audi Q8 SUVs and warns drivers about an imminent red-light violation.

Improved visibility in work zones

The vulnerable road user (VRU) use case is focusing on a specific group of pedestrians, road maintenance workers. Safety messages are sent both ways. Roadside personnel in the construction zone were equipped with C-V2X-enabled vests that warned them of the approaching Audi Q8 SUVs outfitted with C-V2X onboard units, and the vehicles also received alerts about VRUs nearby.

Commsignia contribution

Commsignia supplied C-V2X enabled ITS-RS4 roadside units and ITS-OB4 onboard units for the project.

The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.
The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.

Onboard traffic light information is useful for drivers in case they don’t see the lights well due to harsh weather conditions.

V2X message types used in this project:

MAPcontains information about the lanes in the intersection
SPaTSignal Phase and Timing, gives information about the traffic light statuses
TIMTraveler Information Message (DENM in Europe), contains information about road and traffic related issues
BSMBasic Safety Message, describes the vehicle
PSMPersonal Safety Message, similar to BSM, but reporting about humans and animals


Vehicles equipped with C-V2X can receive low latency warnings about hazards recognised by the digital road infrastructure. It’s an ongoing project, and the roadside units deployed act as enablers for autonomous driving functions. The Virginia Smart Road project was well received by the U.S. media.

Predictable Transportation
West Midlands Case Study

Transportation is quickly evolving, and the industry is looking for innovative ways to make the delivery of goods safer, faster and more predictable. The Midlands Future Mobility consortium is based in the West Midlands, the hub of car manufacturing and automotive technologies in the UK, and has built the testbed for connected and autonomous vehicles (CAVs) and intelligent transport systems to evaluate new technologies.

Transport for West Midlands sub-contracted Siemens Mobility who have been working closely with Commsignia since May 2020 to install CAV infrastructure on the Midlands Future Mobility route, over 300 kilometers of urban, rural, suburban and highway roads. The region’s automotive sector will trial, develop and deploy technology on the route, for example utilising data to trigger warnings about traffic and road hazards. In the future autonomous vehicles will also be trialled, closely monitored by operators.

Fully integrating Public Key Infrastructure (PKI) into the devices guarantees secure communication between the Roadside Units (RSUs) and the device management. Safety is a basic requirement in the project as the trials are running on public roads.

Commsignia contribution

Commsignia supplied roadside units to the project’s multi-vendor environment, connecting the RSUs with device management developed by Siemens Mobility.

The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.
The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.

The project is among the first deployments in Europe to integrate CAV infrastructure with security PKI in order to establish fully secure communication on the V2X interface.


The Midlands Future Mobility project paves the way to improve air quality, reduce congestion and integrate ridesharing services to the public transport services. It’s also the infrastructural foundation of the region’s planned responsive, flexible and predictable goods delivery system that will be based on autonomous pods and carriers.

Support for Self-Driving Vehicles
Las Vegas Case Study

Las Vegas is a city with intense tourism, and visitors typically wander around the downtown by foot, being unfamiliar with local transport environment, with their attention divided. The City puts great emphasis on making its roads safe for the most vulnerable road users, and was looking for a future-proof solution to lay the basis of intelligent transport and preparing for the autonomous era.

In late 2017, Las Vegas also launched the very first driverless shuttle on a public street in America. Members of the public can take free rides on a 12-seater Navya self-driving shuttle along a 0.6 mile loop that includes the city’s iconic Fremont Street. Making sure it has a smooth ride was a key priority.

Commsignia contribution

Commsignia’s roadside units (RSU) were installed along the Las Vegas Strip and other critical infrastructure points in the Las Vegas Innovation District such as traffic intersections, roundabouts and busy roads.

The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.
The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.

Working with the local partner, Southwest Traffic Systems, Commsignia supplied its next generation Smart City ITS-RS4 Roadside Units as part of the infrastructure to support the driverless shuttle at junctions and other critical points along the route.

The ITS-RS4 acts as a local hub for sensor data exchange as well as a service/application platform that can be used to enhance the safety of all road users and help optimize traffic management. The ITS-RS4 gathers information from the surrounding environment such as traffic cameras, traffic light controllers, sensors and V2X connected vehicles – cars, motor-cycles and even bicycles. A powerful Deep Neural Network / GPU accelerated Artificial Intelligence processor creates a real-time representation of the information to create a dynamic model of the environment.

Applications and services in the ITS-RS4 utilize the dynamic model to enhance road-safety generating real-time alerts to drivers, connected autonomous vehicles and pedestrians, whilst escalating events and aggregated data for analytics to Traffic Management Centers.


The deployment is one of the largest smart city deployment in Northern America to date.The infrastructure has been operational for 2 years and counting, with no major hardware failure. The cooperation has been since expanded, Commsignia’s RSUs now cover more than 300 intersections. The driverless shuttle carried over 30,000 passengers in its first 11 months of operation.

Connected Autonomous Vehicles
San Diego Case Study

In August 2020, the San Diego Regional Proving Grounds — a U.S. Department of Transportation designated regional test-bed for highly automated and self-driving vehicles — Caltrans, the San Diego San Diego Association of Governments (SANDAG) and other local agencies launched a pilot project to evaluate C-V2X technology as part of a connected roadside infrastructure, and to assess how it can support the widespread deployment of intelligent transport solutions.

The project covers a 3-mile stretch of highways and traffic light intersections off Interstate-805 and State Route 52 between Sorrento Valley and Kearny Mesa. It also includes vehicles equipped with onboard units (OBU) and roadside units (RSU).

During the pilot, infrastructure-to-vehicle (I2V) TIM messages are being sent out, covering reduced speed zone, work zone and disabled vehicle. With the expansion of the pilot, the implementation of SPaT is also planned.

Commsignia contribution

Commsignia contributed to the project by supplying
C-V2X enabled ITS-RS4 roadside units.

The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.
The C-V2X ITS-RS4 platform provides a precise digital map of the intersection and traffic light timing information for each lane.

It features the latest cyber security measures including Hardware Security Modules (HSM) and V2X Software Stack to make sure that the system adheres and exceeds latest security standards.
The ITS-RS4 platform builds on the market leading and proven V2X Software stack supporting applications including

  • V2V for vehicle collision avoidance and safety systems;
  • V2I for enhanced traffic signal timing and priority;
  • V2N for real-time traffic routing and cloud services;
  • V2P for safety alerts to pedestrians, cyclists and motor bikes.


The pilot is still ongoing, the experience gained will support transportation planning efforts of the region.