C-ITS Services


Green Priority (GP) aims to change the traffic signals status in the path of an emergency or high priority vehicle (e.g., public transport vehicles), halting conflicting traffic and allowing the vehicle right-of-way, to help reduce response times and enhance traffic safety. This service is also known as “Traffic signal priority request by designated vehicles” or “Priority Request”. Different levels of priority can be applied, e.g. extension or termination of current phase to switch to the required phase. The appropriate level of green priority depends on vehicle characteristics, such as type (e.g. HGV or emergency vehicle) or status (e.g., public transport vehicle on-time or behind schedule). The vehicles request priority for an intersection, and the traffic light controller determines in what way it can and will respond to the request.

Green Light Optimal Speed Advisory (GLOSA) provides drivers an optimal speed advice when they approach a signalized intersection. This advice may involve maintaining actual speed, slowing down, or adapting a specific speed. If a green traffic light cannot be reached in time, GLOSA may also provide time-to-green information when the vehicle is stopped at the red light. Application of GLOSA takes advantage of real-time traffic sensing and infrastructure information, which can then be communicated to a vehicle aiming to reduce fuel consumption and emissions.

Cooperative Traffic Light for VRUS (CTLVRUs) aims to increase the safety of pedestrians through warranting priority or additional crossing time (i.e., extending the green light phase or lessening the red phase) based on pedestrian characteristics (or on special conditions, such as weather). The service can also be extended to cover other VRUs, such as cyclists. The service is also known as “Pedestrian Mobility” or “Traffic light prioritisation for designated VRUs”.

Flexible Infrastructure (FI) aims to interchange information about the lanes provided to the traffic users according to the time of the day. It includes solutions such as reserved lane.

In-vehicle Signage (IVS) aims to provide information to the driver about the road signs (and dynamic information, e.g., local conditions warnings identified by environmental sensors). The purpose of this service is to increase the likelihood of drivers being aware of potentially dangerous conditions in case a roadside traffic sign is not noticed.

Mode & Trip Time Advice (MTTA) aims to provide a traveller with an itinerary for a multimodal passenger transport journey, taking into account real-time and/ or static multimodal journey information.

Probe Vehicle Data (PVD) is data generated by vehicles. The collected traffic data can be used as input for operational traffic management (e.g., to determine the traffic speed, manage traffic flows by alerting for instance users about hot spots where the danger of accidents is higher), long term tactical/ strategic purposes (e.g. road maintenance planning) and for travelled information services. Also known as Floating Car Data (FCD).

Urban Parking Availability (UPA) provides parking availability information and guidance for drivers to make informed choices about available parking places. This service aims to reduce congestion, time loss, pollution, and stress caused by cruising for parking.

Motorway Parking Availability (MPA) provides motorway parking availability information and guidance for truck drivers to make informed choices about available parking places. Existing solutions provide information about the location of truck parking areas, their capacity, equipment and facilities available on-site, security surveillance, and information about parking for lorries transporting dangerous goods. The Service provides for certain truck parking areas all over Europe the possibility to book dedicated places e.g. for sensitive or high value goods transport.


Road Works Warning (RWW) aims to inform the drivers in a timely manner about road works, restrictions, and instructions. This allows them to be better prepared for potential works downstream on the road, therefore reducing the probability of collisions.

Road Hazard Warning (RHW) aims to inform the drivers in a timely manner of upcoming, and possibly dangerous events and locations. This allows drivers to be better prepared for the upcoming hazards and make necessary adjustments and manoeuvers in advance.

Signal Violation Warning (SVW) aims to reduce the number and severity of collisions at signalised intersections by warning drivers who are likely (due to their speed / proximity to the intersection) to violate a red light. Also known as the “Signal Violation / Intersection Safety” or “Red Light Violation Warning”.

Emergency Vehicle Warning (EVW) uses information provided by the emergency vehicle to inform a driver of another vehicle about an approaching emergency vehicle even when the siren and light bar of the emergency vehicle may not yet be audible or visible. This is also known as “Emergency Vehicle Alert (EVA)”, which alerts the driver about the location and the movement of public safety vehicles responding to an incident so the driver does not interfere with the emergency response. The service is enabled by receiving information about the location and status of nearby emergency vehicles responding to an incident.

Warning System for Pedestrian (WSP) aims to detect risky situations (e.g. road crossing) involving pedestrians, allowing the possibility to warn vehicle drivers. Hence, the warning is based on pedestrian detection. The scope of the service can be extended to cover other Vulnerable Road Users (e.g. cyclists). The service is particularly valuable when the driver is distracted or visibility is poor. The service is also known as “Warning Systems for Vulnerable Road Users”.

Emergency Brake Light (EBL) aims to avoid (fatal) rear end collisions, which can occur if a vehicle ahead suddenly brakes, especially in situations with dense traffic or with decreased visibility. The driver is warned before s/he is able to realize that the vehicle ahead is braking hard, especially if s/he does not see the vehicle directly (vehicles in between).

Cooperative Adaptive Cruise Control (CACC) represents an evolutionary advancement of conventional cruise control (CCC) and adaptive cruise control (ACC) by utilizing V2V communications to automatically synchronize the motion of many vehicles. While ACC uses Radar or LIDAR measurements to derive the range to the vehicle in front, CACC also takes the preceding vehicle’s acceleration into account.

Slow or Stationary Vehicle Warning (SSVW) aims to inform/ alert approaching vehicles of (dangerously) immobilized, stationary or slow vehicles that impose significant risk.

Motorcycle Approaching Indication (MAI) informs the driver of a vehicle that a motorcycle is approaching/passing. The scope can be extended to cover other VRUs, such as cyclists and other Powered Two Wheelers (PTW). The motorcycle could be approaching from behind or crossing at an intersection.

Blind Spot Detection (BSD) aims to detect and warn the drivers about other vehicles of any type located out of sight.