RDE CoDriver

RDE CoDriver - RDE Testing
RDE CoDriver YouTube video
STARS Mobile App

Mobile app for RDE testing

The RDE CoDriver is a mobile app that helps the driver to navigate through the complex Real Driving Emission (RDE) test requirements to ensure the successful completion of the test. These requirements include specific boundaries regarding trip composition, driving dynamics, altitude and temperature conditions.

Throughout an RDE test, the RDE CoDriver app calculates and visualizes real-time information based on the data from a wirelessly connected PEMS (Portable Emissions Measurement System), such as the OBS-ONE. The app immediately informs the driver in case of a failure, reducing wasted test time and resources to a minimum. 

Manufacturing Company: HORIBA, Ltd.
  • Supports European Commission Regulation (EU) 2017/1151
  • Connects wirelessly to PEMS and visualizes all relevant information
  • Supports moving-average-window (EMROAD) and power-binning (CLEAR) method
  • Supports upload of test results to central data storage for immediate processing


  • The RDE CoDriver takes the complexity out of RDE testing and helps to increase the number of successful tests significantly
  • The RDE CoDriver substantially reduces the cost for the testing of a vehicle and increases the availability of the car for other tests, hence decreasing development time and cost
  • The RDE CoDriver allows for training the driver without the need for an actual PEMS unit reducing cost and time for resources



  • The implications of RDE Testing
  • RDE test with on-board system
  • RDE test on the chassis dynamometer 


Mobile App Stores 

STARS Mobile by HORIBA Test Automation Ltd

Apple Store Logo - RDE CoDriver Google Play Store Logo - RDE CoDriver

Mobile Operating System


iOS version 12 (or later)
Android version 6.0 (or later) 

Using the RDE CoDriver with a

OBS-ONE version 1.3.8 (or later) with AK-interface
Wireless router with one (1) RJ-45 Ethernet port

HORIBA offers a free version of the RDE CoDriver. The following table clarifies the particular features that the free and fully licensed versions provide.

  Free Full
Driving Dynamics

Distance (km)

Distance share (%)

Acceleration count 

v*a pos [95%]

RPA Linmit (%) x 100











GPSMobile Device X 
Performance AssessmentMoving Average Window X
 Power-binning X
Test Results Review test results  X
 Send test results by email  X
RDE Test with Portable Emission Measurement System (PEMS)
RDE Test with Portable Emission Measurement System (PEMS)
In 2016 the European Commission´s (EC) Member States agreed on new procedures and requirements for light-duty vehicle type approval certification introducing Portable Emission Measurement System (PEMS) for vehicle testing on the road.
Real driving emissions with RDE CoDriver
Real driving emissions with RDE CoDriver
Real Driving Emission (RDE) tests confirm the results produced during an emissions test on a chassis dynamometer to ensure that vehicles meet the set limits in the real world.

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