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BTS Home
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Publications
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Journal of Transportation and Statistics
>
Volume 7 Number 2/3
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Paper 6
Table 4 - Percentile and Pace Speed Characteristics
Excel
|
CSV
Six-lane freeway sections
Site (highway)
Direction
Lane
15th percentile speed (u
15
)
85th percentile speed (u
85
)
10 mph pace
Vehicles in pace (%)
320 (I-75)
NB
Shoulder
64
76
66 - 76
66
Middle
69
79
70 - 80
76
Median
75
83
74 - 84
76
SB
Shoulder
63
75
66 - 76
66
Middle
70
80
71 - 81
78
Median
76
86
76 - 86
70
9904 (I-75)
NB
Shoulder
62
73
65 - 75
68
Middle
69
77
67 - 77
77
Median
73
80
71 - 81
76
SB
Shoulder
64
74
65 - 75
77
Middle
71
79
68 - 78
75
Median
74
82
70 - 80
70
9905 (I-95)
NB
Shoulder
63
74
63 - 73
68
Middle
68
78
68 - 78
72
Median
72
83
74 - 84
60
SB
Shoulder
63
73
63 - 73
70
Middle
69
78
70 - 80
78
Median
73
81
74 - 84
72
Four-lane freeway sections
Site (highway)
Direction
Lane
15th percentile speed (u
15
)
85th percentile speed (u
85
)
10 mph pace
Vehicles in pace (%)
9901 (I-10)
WB
Shoulder
67
78
69 - 79
69
Median
73
82
73 - 83
75
EB
Shoulder
67
78
69 - 79
70
Median
73
82
73 - 83
72
9928 (I-10)
WB
Shoulder
62
73
64 - 74
66
Median
69
78
68 - 78
77
EB
Shoulder
65
75
66 - 76
69
Median
68
77
67 - 77
77
351 (I-75)
WB
Shoulder
65
79
69 - 79
62
Median
70
84
72 - 82
59
EB
Shoulder
67
81
70 - 80
57
Median
77
94
82 - 92
52
9919 (I-95)
NB
Shoulder
63
74
67 - 77
60
Median
60
79
72 - 82
49
SB
Shoulder
62
72
64 - 74
63
Median
64
71
64 - 74
63
9932 Turnpike
NB
Shoulder
64
76
65 - 75
66
Median
72
81
72 - 82
70
SB
Shoulder
65
77
68 - 78
60
Median
73
84
73 - 83
70
Key: EB = eastbound; NB = northbound; SB = southbound; WB = westbound.