Areas in which trafficpilot is in operation. These are constantly being expanded.

As a town or city, would you like to offer trafficpilot in your area as well? Please contact us!



Forecast Display During Journey2018-03-13T15:19:37+01:00

This app uses current positioning data to display red-green forecasts for each upcoming light signal.

The positioning data is determined using the GPS tracking function of your smartphone and compared to map data to determine the traffic light ahead. Up-to-date forecasts are then fetched and displayed for the traffic signal in question.

The forecast is placed as a type of red-green carpet across the street displayed. The colour around the central arrow indicates whether the next traffic signal, when reached, will be red or green if the driver continues at the same speed.

The colour above the arrow displays what the traffic signal will be showing if the driver speeds up and the colour below the arrow displays the outcome if the driver slows down. The white stop line at the very top indicates the position of the traffic signal and the distance between the vehicle and the signal is displayed in metres at the foot of the screen. The colour just below the white line indicates the colour that the traffic signal is currently showing.

Forecast Accuracy and Gradients of Color2018-03-02T09:25:10+01:00

Different gradients of colour display how definitive the forecast for red and green is. Grey colours indicate the forecast areas in which red and green are not definitive and can only be forecast with a certain probability.

Change Required Indicator2018-03-02T09:26:25+01:00

A white rectangle on the roadway symbolizes a detector. The traffic signal ahead only changes to green if one drives right up to the stop line.

Time To Green2019-05-17T20:49:30+02:00

When you stop, the display changes and shows the expected time until the lights change to green in seconds over the stop line. If the voice output function is activated, it informs you several seconds before the lights change to green.

Forecast Display with Several Lanes2018-03-02T09:32:15+01:00

Vehicles turning left or right are shown in separate side lanes. Arrows display the direction. Turning lanes without light signals (for example, right-turners without traffic lights) are shown by an empty lane.

Power saving mode2019-03-27T13:18:00+01:00

When power save mode is enabled, the refresh rate is lowered. This saves approximately 5% of battery power.

Map wih Forecasted Traffic Signals2018-03-02T09:35:20+01:00

If you swipe to the left on the screen, a map with the forecasted traffic signals will be displayed. Traffic signals that can be easily forecast are displayed in green, ones that are not so easily forecast in grey, and ones that cannot be forecast at all in are displayed as transparent.

Forecast Calculation2018-03-02T09:36:31+01:00

Every light signal control is different. Some traffic lights always change in the same rhythm – in this case, forecasting is easy.

However, many traffic lights react dynamically depending on different influences: pedestrians who press for the green man, buses and trams that are given priority at the junction, or heavy traffic from one direction or the other. In such cases, forecasting is more difficult and sometimes only possible at short notice (or even not at all if the data from the traffic lights is not transmitted quickly enough).

Uncertain forecasts are displayed in grey in the app. Red and green are shown lighter and darker. This often only affects parts of the forecast and there are, nevertheless, certain red and green areas that help you to choose the correct approach speed.

Using the App on Your Bicycle2018-03-02T09:37:10+01:00

The app allows cyclists to move more easily in towns. Knowing how long the next lights will be green or red saves effort. You can adjust your speed to the situation in time.

Audio Output2019-03-27T14:10:13+01:00


If you activate the voice output, the app gives you an indication of the speed you need to drive to make the green light. It informs you shortly before the red light is due to change.


In addition, the following announcements are issued: “Green not accessible”, “Roll out to … km/h” and “Please drive up to the stop line”.


You can activate the bicycle mode in the settings. The information displayed is then adjusted for use on a bicycle. In bike mode, the maximum recommended speed for the Green Wave can be set.

Furthermore, you can turn on the sun mode. This offers a contrast-richer display of the forecast colours so that you can see them better in sunlight.

A further option enables the identifier used for retrieving the forecast to be changed regularly, thus making traceability more difficult.

You can switch the audio output function on and off either in the options or by choosing the loudspeaker symbol on the forecast screen.


What you need to know when installing trafficpilot?2021-05-17T07:48:25+02:00

System requirements

Currently, Android version 6.0 and iOS version 11.0 are supported. The mobile phone should be up-to-date. Inefficient or low-powered equipment can cause the display to be disrupted or other various problems.

  • Ensure that the time on the mobile phone is being provided via the network (under Settings -> Date and Time: Take Tine from Network).
  • Activate GPS and improved location determination via WLAN. When driving through built-up areas, leave WLAN switched on in order to allow the best tracking possible.
  • Activate mobile data services.


It takes a while for tracking information to become available – it varies depending on mobile phone and 1-2 minutes may easily elapse before the data is available.

Can trafficpilot also be used with tablets?2018-03-07T11:04:37+01:00

Yes, as long as the tablet uses GPS and a mobile phone connection.

Can I use trafficpilot for navigation purposes?2021-07-21T11:41:35+02:00

No, a navigation function is not included in trafficpilot. However, trafficpilot can be used in combination with a navigation app, such as Google Maps (Android) or Apple Maps (iOS). Therefore, the trafficpilot app should run in the front and the navigation service in the background. The navigation is shown in the header alongside the forecast of the traffic signal upstream. In addition, the voice message of the navigation service works in the background.

Android smartphones offer the option of displaying two apps on the screen at the same time with the “multiple window mode”. This allows both trafficpilot and a navigation-app to be displayed together.

Instructions (operating system specific):

  1. “Current application button” – display of all running apps
  2. Multiple window mode / split screen mode alternatively press app icon and select “in split screen view
  3. Drag apps to the desired position
What does a white square on the lane mean?2018-03-07T11:06:23+01:00

The next traffic light only changes to green if you drive right up to the stop line. The square symbolizes a detector in the street.

Why are several different forecasts sometimes displayed next to each other?2018-03-07T11:06:48+01:00

If there are individual signals for left and right turners, the forecasts are displayed in several lanes next to each other.

How does the app ensure the safety of my data?2019-05-15T13:20:30+02:00
Why do forecast and traffic lights not always match?2018-03-07T11:16:22+01:00

Now and then it can happen that the forecast displayed does not coincide with the traffic light signals. This can be due to missing data but also a bad connection. Please always follow the traffic lights!

Why is there not a forecast at every set of lights?2018-03-07T11:16:48+01:00

A forecast for the lights can only be created if enough up-to-date data of the lights is available in a sufficient quality. Furthermore, the city or region has to be in a position to technically support the creation of forecasts (see map of the application areas).

Why are there only somtimes forecasts at some lights?2018-03-07T11:17:12+01:00

The forecast quality at traffic lights can be dependent on the time of day or other factors. If the forecast is too unsure, it will not be displayed.

What you should know when using the app on a bicycle?2018-03-07T11:53:07+01:00

Your mobile phone has to be securely attached to the bicycle, best of all in a plastic bag.

The use of earphones is not recommended for security reasons.

When you tap on the bicycle symbol at the bottom of the screen, you can switch between car and bike mode.

What does „Server not Available“ mean?2018-03-07T11:18:20+01:00

This means that trafficpilot is not currently receiving data from the server.
It is possible that the internet connection is down. trafficpilot automatically connects itself with the server as soon as possible.

What does “outside the forecast areas” mean?2018-10-10T13:02:46+02:00

You are in an area where we do not receive traffic light data and therefore we can not produce any forecasts.

Why can’t I hear speech output in my car?2020-07-22T16:27:46+02:00

Your phone may be connected to the hands-free kit via Bluetooth. If you want to use the speech output of trafficpilot, the Bluetooth connection must be deactivated.

It could also be that you have established a data connection to your vehicle via USB. Disconnect it connection and try again.


How can I give feedback or report errors?2019-03-21T12:52:36+01:00

Please send feedback per e-mail to info@trafficpilot.eu

Please state the following:

  • Smartphone model and Android / iOS version
  • Note time and place as exactly as possible
  • Click on Log Data in the menu at the top right on the same day (ideally with an existing WLAN connection)

Please differentiate between bad forecasts and adverse behaviour of the app.

We look forward to receiving your positive feedback and are equally open to any suggestions for enhancement or improvement.

Advantages of using a Green Wave Assistant

As part of the ACATS program (Program to Advance Connectivity and Automation in the Transportation System) sponsored by Transport Canada, a large-scale field test was conducted for the first time to determine the extent to which a Green Wave Assistant can reduce fuel consumption and C02 emissions in urban areas.

The project was conducted by Carleton University, Traffic Technologies Services, Thompson Technologies and the City of Ottawa in the summer of 2019.

In the test field, the fuel consumption of seven test drivers of different ages of the Ottawa urban vehicle fleet was compared over eight weeks (each between 7 a.m. and 3 p.m.) with and without Green Wave Assistant. During this period, almost 24,000 kilometers were driven in the Ottawa metropolitan area with a total of 1178 traffic signals, 65% of which sent data to the Green Wave Assistant. Ottawa’s traffic signals do not use a fixed time program, but switch adaptively depending on traffic demand from different directions.

The result was a fuel saving of 7% on average on routes where the Green Wave Assistant was active. Taking into account all routes driven (including motorways and traffic lights where the Green Wave Assistant was not available), fuel savings of an average of 5% or 0.883 l/100 km were determined.

The youngest and most dedicated test driver even achieved a saving of 14.4%, which may give an indication of the savings that can be achieved when driving autonomously.

Projections on a fleet of 900 vehicles (50% petrol and 50% diesel engines) showed a saving of 121 500 litres of fuel per year and 281 310 kg CO2.


GEVAS software GmbH
Nymphenburger Straße 14
80335 Munich
+49 89 25 55 97 0

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