Table 3 Mean Speed Characteristics,,,,,,,,,
Site code (highway),Direction of travel,Travel lane,24-hour passenger car lane volume,24-hour truck volume ,"Lane-based mean speed
m1","Vehicle type-based mean speed
m2",Trimmed mean speed,Average mean speed,
Six-lane highway sections,,,,,,,,,
320 (I-75),NB,Shoulder,"4,003","4,074",73,73,70,70,
,,Middle,"8,173","2,202",,,73,74,
,,Median,"3,609",99,,,79,79,
,SB,Shoulder,"4,350","3,850",74,74,69,70,
,,Middle,"9,109","2,175",,,75,75,
,,Median,"4,976",140,,,80,81,
9904 (I-75),NB,Shoulder,"4,614","4,436",71,73,69,67,
,,Middle,"10,606","2,227",,,73,72,
,,Median,"6,512",107,,,76,76,
,SB,Shoulder,"3,814","4,184",73,72,69,68,
,,Middle,"8,899","2,058",,,75,74,
,,Median,"4,658",78,,,77,78,
9905 (I-95),NB,Shoulder,"5,685","3,209",72,72,68,68,
,,Middle,"12,288","3,072",,,73,73
,,Median,"5,711",316,,,78,77
,SB,Shoulder,"7,004","3,766",72,72,68,68
,,Middle,"10,992","2,279",,,73,73
,,Median,"4,471",280,,,77,77
Four-lane highway sections,,,,,,,,
9901 (I-10),WB,Shoulder,"4,959","2,729",74,74,73,73
,,Median,"2,356",367,,,78,78
,EB,Shoulder,"4,843","2,844",74,74,73,73
,,Median,"2,254",407,,,78,78
9928 (I-10),WB,Shoulder,"4,551","2,122",69,69,68,68
,,Median,"2,081",266,,,73,73
,EB,Shoulder,"4,894","2,107",70,71,70,70
,,Median,"1,867",257,,,72,72
351 (I-75),WB,Shoulder,"4,522","1,097",73,73,72,72
,,Median,"2,087",122,,,77,77
,EB,Shoulder,"4,399",132,78,79,74,74
,,Median,"2,297","1,103",,,85,85
9919 (I-95),NB,Shoulder,"3,649","3,574",69,69,70,68
,,Median,"5,118","2,640",,,75,70
,SB,Shoulder,"5,427","3,730",66,67,68,66
,,Median,"3,642","1,440",,,69,67
9932 (Turnpike),NB,Shoulder,"6,479","1,142",72,72,70,70
,,Median,"3,074",192,,,75,77
,SB,Shoulder,"7,733","1,400",73,73,70,71
,,Median,"4,415",361,,,76,78
Key: EB = eastbound; NB = northbound; SB = southbound; WB = westbound.,,,,,,,,