DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The system 1 is installed in the vehicle being tested where it will measure automatically, without requiring operator attendance, the driveability-relevant measurement variables 2, 3 of operational states of engine A and/or vehicle B, such as engine speed, position of throttle or accelerator pedal, vehicle speed, longitudinal vehicle acceleration, intake manifold vacuum, coolant temperature, ignition timing, injection volume, lambda value, exhaust gas recirculation rate, exhaust gas temperature.
The measured data 2, 3 are permanently stored in storage cells 4b of the data storage unit 4.
Driveability-relevant, stationary and dynamic states of these measured variables, i.
e.
, so-called trigger conditions 4a, are also stored in the data storage unit 4.
If the measured data 2, 3 are in agreement with the stored trigger conditions 4a, the evaluation unit 5 will initiate a predefined, mathematical and statistical evaluating process in a subunit 5a.
This evaluation includes a complete, objective, and reproducible simulation of the driver's personal assessment of the current driving state.
The computation process and the connection between momentary measurement data and subjective driveability assessment is stored in an assigning system 6 as result of a multitude of measurements and correlations between subjective rating and objective measurement data.
The results of the computations are stored in predefined storage cells 4c of the data storage unit 4 in a fully automated process.
The system 1 may be permanently employed in actual road operation.
As the driver need not pay any attention to the system 1, the car ride may serve additional purposes not related to the testing procedure.
In order to obtain a driver-, vehicle-, and route-relevant driving profile the number of trigger conditions 4a detected is analyzed and stored.
Among other purposes this result may be used for better tuning, in the development and calibration phase, of driving states which often occur in practical operation
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Navigation and GPS 
