STUDIES OF EXHAUST FUMES CONCENTRATIONS WITH REFERENCE TO TRAFFIC DATA

UNTERSUCHUNGEN UEBER DIE ABGASKONZENTRATIONEN IN ABHAENGIGKEIT VON DEN VERKEHRSDATEN

STUDIES CARRIED OUT ON THE EXHAUST EMISSION OF VEHICLES RELATE MAINLY TO TOWN CENTRES AND IN PARTICULAR TO JUNCTIONS AND ROADS CARRYING HEAVY TRAFFIC TRAVELLING AT AVERAGE SPEEDS OF UNDER 50 KM/H. TO CALCULATE EXPECTED EXHAUST EMISSIONS AND TO SUM UP THE PRESENT SITUATION, IT IS NECESSARY TO MEASURE EXHAUST GAS CONCENTRATION ON MOTORWAYS AND FAST ROADS WHERE THERE IS LESS HINDRANCE TO THE SPREADING OF THE EXHAUST FUMES, AND WHERE METEOROLOGICAL DATA (WIND DIRECTION AND SPEED, AIR TEMPERATURE AND MOISTURE) CAN BE TAKEN INTO ACCOUNT.