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Table 3 Number of hours and number of vehicles (passes) per weather condition for passenger cars

From: Effects of weather conditions, light conditions, and road lighting on vehicle speed

Weather conditions Number of observations (number of hours) Number of vehicles (total number of vehicle passes)
Clear 163,115 46,562,368
Rain 27,313 7,612,008
Snow 20,425 5,350,937
Total 210,853 59,525,313