REDUCTION OF MAXIMUM SPEED LIMIT FROM 110 TO 90 KM/H DURING THE SUMMER OF 1979. INFLUENCE ON SPEED AND FUEL CONSUMPTION

Sänkning av högsta tillåten hastighet från 110 till 90 km/h under sommaren 1979 : effekt på hastighet och bensinförbrukning

This report presents the results of speed measurements and calculations on fuel savings in Sweden during the summer of 1979. During the period 21 June - 15 October the speed limit was reduced to 90 km/h on the roads, earlier limited to 110 km/h. The speed measurements show that the average speed for cars on motorways decreased by 12 km/h (from 107 to 95 km/h) immediately after the reduction of speed limit. The reduction remained until August while the average speed in September and October had increased by 5 km/h to 100 km/h. On highways with a speed limit of 110 km/h the average speed decreased by 7 km/h (from 97 to 90 km/h). Also this decrease remained until August. On roads always limited to 90 km/h the average speed decreased by 2 km/h (from 89 km/h to 87 km/h) during the period. The result of the calculation of the fuel saving points to the fact that the reduction of the speed limit has lead to a fuel saving of 12 to 29 million litres during the period. (TRRL)

• Corporate Authors:

  Swedish National Road Administration

  Fack S-10220
  Stockholm 12,   Sweden 
• Authors:
  • Öberg, Gudrun
  • Carlsson, Gunnar
• Publication Date: 1980

Language

• Swedish

Media Info

• Features: Figures; References; Tables;
• Pagination: 13 p.

Subject/Index Terms

• TRT Terms: Base course (Pavements); Behavior; Development; Energy conservation; Experimental roads; Fatigue (Mechanics); Fuel consumption; Granulated slag; Highways; Impacts; Measurement; Mix design; Pavements; Sand; Soil stabilization; Speed limits; Stability (Mechanics); Stabilized materials; Strength of materials; Traffic speed
• Uncontrolled Terms: Laying
• Geographic Terms: France
• ITRD Terms: 5409: Average speed; 6464: Calculation; 9009: Decrease; 232: Fuel consumption; 6136: Measurement; 5408: Speed; 624: Speed limit; 8109: Sweden
• Subject Areas: Construction; Energy; Environment; Geotechnology; Highways; Materials; Operations and Traffic Management; Pavements; I33: Other Materials used in Pavement Layers; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00317037
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Report/Paper Numbers: Meddelande Nr190 Monograph
• Files: ITRD, TRIS
• Created Date: May 21 1981 12:00AM