THE EFFECTS OF GRADIENT ON TRAFFIC NOISE

MEASUREMENTS OF ROAD TRAFFIC NOISE WERE MADE AT 46 LOCATIONS ON SINGLE-CARRIAGEWAY HILLY MAIN ROADS, SUBJECTED TO SPEED LIMITS, IN THE GREATER LONDON AREA, WHERE THE FLOW OF VEHICLES WAS RELATIVELY STEADY. INITIALLY SIMULTANEOUS RECORDINGS WERE MADE, AS FAR AS POSSIBLE, AT KERBSIDE AND 10 M FROM THE KERB BUT, IN THE MAIN PART OF THE INVESTIGATION, OBSERVATIONS WERE MADE AT 18 OF THE SITES, WITH THE MICROPHONE IN THE 10M POSITION. MEASUREMENTS WITH INDIVIDUAL VEHICLES, SPECIALLY PROVIDED FOR THE PURPOSE, DID NOT SHOW ANY VARIATION OF PEAK SOUND LEVEL WITH GRADIENT, EXCEPT FOR GRADIENTS OF THE ORDER OF 10 PER CENT. RECORDINGS OF PEAK LEVELS FROM VEHICLES SELECTED AT RANDOM AT A GIVEN SITE, WHEN THE DENSITY WAS LOW, YIELDED AVERAGE VALUES WHICH COULD BE USED TO PREDICT THE PEAK SOUND LEVEL FOR THAT SITE IF GIVEN THE RATE OF FLOW OF TRAFFIC. /TRRL/

• Corporate Authors:

  Brunel University /UK

  ,    
• Authors:
  • Blitz, J
• Publication Date: 0

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 231 p.

Subject/Index Terms

• TRT Terms: Highway grades; Measurement; Metropolitan areas; Recording instruments; Slopes; Sound level; Sound level meters; Speed limits; Traffic flow; Traffic noise
• Old TRIS Terms: Recorders
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00224741
• Record Type: Publication
• Report/Paper Numbers: Final Rept
• Files: TRIS
• Created Date: May 15 1974 12:00AM