In Norwegian traffic rules (Vegtrafikkloven), why does Statens vegvesen implement reduced 'environmental speed limits' (miljøfartsgrense) on certain main roads in Oslo during winter?
Answer and explanation
Correct answer: D. To reduce toxic road dust and improve air quality
- Step 1: Lowering speeds from 80 to 70 or 60 km/h dramatically cuts the pulverization of asphalt by studded tyres, curbing hazardous PM10 air pollution spikes. Answer: To reduce toxic road dust and improve air quality. Why not the others: the alternative options do not conform to statutory traffic regulations under the Norwegian Road Traffic Act (Vegtrafikkloven and Trafikkreglene).
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