198001382 - 44A ROAD TEST FOR COMFORT EVALUATION
- Carry out a road test on traffic-free roads in safe conditions, following the highway code.- Before proceeding with the test, check the inflation pressure of the two vehicles, restoring the values to the correct ones if they are found to be incorrect.- Also check the condition of the wheel rims, making sure they are not distorted or broken, replacing them if any faults are found.- Carry out the test on an uneven road surface, at a speed of 40 km/h, to check the capacity of the suspension to absorb the stresses produced by small imperfections (suspension damping) with the consequent acoustic repercussions inside the passenger compartment.- Check the capacity of the suspension to absorb the stresses produced by road surface roughness and the consequent acoustic repercussions inside the passenger compartment, carry out the road test at a speed of 40 km/h over a route that has a series of pot-holes.- Check the rapid damping of any pitching produced by the irregularities in the road surface, carrying out the test at a speed of 50 km/h on a straight road with suitably spaced humps and holes.- This type of test should always be used for comparison with a new vehicle or reference vehicle of the same trim level and engine type, available in the workshop at the time of the test in question.- At the end of the test in question, assess/rate the driving comfort of the vehicle in accordance with the attached table.| Judgement | Score |
|---|---|
| Poor | 3 |
| Mediocre | 4 |
| Just acceptable | 5,5 |
| Acceptable | 6 |
| Good | 7 |
 | The reference vehicle has a driving comfort default rating of 7. |