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Figure 1 - Hourly Variations of Average Lane Mean Speeds

Figure 1 - Hourly Variations of Average Lane Mean Speeds

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Shoulder lane: 4-lane highway section

Time of day Mean speed (mph)
9901 351 9932 9928 9919
0 68.73 73.52 68.87 66.92 63.02
1 72.31 70.61 69.72 67.66 63.96
2 71.99 72.31 68.07 66.99 64.07
3 72.13 70.33 68.08 66.60 64.53
4 71.95 70.96 66.92 66.88 64.13
5 71.90 72.46 67.92 67.50 65.31
6 72.29 73.80 71.14 67.35 65.70
7 73.31 73.86 71.44 67.53 67.50
8 72.84 73.39 72.23 67.24 65.96
9 71.95 73.28 70.98 68.33 66.93
10 71.05 73.53 71.38 67.99 65.70
11 72.81 73.66 70.13 67.67 66.10
12 67.15 73.39 70.34 68.50 65.97
13 67.80 71.95 70.52 67.95 66.05
14 67.16 71.44 71.09 68.40 66.50
15 67.68 73.25 71.56 69.44 66.24
16 67.78 72.05 72.17 68.60 66.47
17 68.56 69.00 72.70 69.15 66.85
18 69.24 71.28 72.51 68.44 66.57
19 68.32 72.48 71.10 66.54 66.80
20 67.74 72.76 70.44 66.77 65.33
21 66.93 73.39 70.69 67.32 65.55
22 67.47 71.68 69.59 66.01 66.08
23 67.48 72.39 70.81 65.83 65.84

Shoulder lane: 6-lane highway section

Time of day Mean speed (mph)
320 9904 9905
0 70.35 69.34 68.73
1 69.08 69.84 67.77
2 70.02 69.73 66.78
3 69.06 68.69 67.57
4 68.24 68.45 67.55
5 68.26 68.55 68.18
6 68.36 68.82 68.56
7 69.18 68.89 68.32
8 70.18 68.43 67.61
9 70.78 68.68 67.38
10 69.60 68.32 67.17
11 69.89 68.56 67.62
12 69.14 69.57 67.15
13 70.44 70.37 67.80
14 70.31 71.48 67.16
15 70.20 72.00 67.68
16 69.83 71.81 67.78
17 69.70 72.32 68.56
18 69.00 72.31 69.24
19 69.11 72.55 68.32
20 69.33 72.88 67.74
21 69.64 72.86 66.93
22 69.18 73.40 67.47
23 69.20 71.79 67.48

Middle lane: 6-lane highway section

Time of day Mean speed (mph)
320 9904 9905
0 73.79 71.23 72.42
1 73.78 72.99 72.38
2 73.42 73.84 72.07
3 74.68 72.97 72.48
4 75.29 71.97 73.60
5 73.64 71.26 73.51
6 75.43 72.17 74.10
7 75.39 73.20 74.10
8 75.50 72.83 72.99
9 75.29 72.53 72.89
10 75.3 72.55 72.10
11 75.43 72.63 73.11
12 75.26 72.80 72.62
13 75.33 71.90 73.16
14 75.92 72.45 73.01
15 76.02 72.60 72.63
16 75.37 72.33 73.23
17 75.81 71.83 73.72
18 76.10 72.30 74.73
19 75.29 71.99 73.98
20 74.90 72.83 73.09
21 74.23 72.00 72.21
22 73.63 72.96 72.26
23 74.24 72.64 72.82

Median lane: 4-lane highway section

Time of day Mean speed (mph)
9901 9928 351 9919 9932
0 75.91 76.67 79.44 62.61 74.00
1 80.00 70.44 74.33 58.86 75.07
2 79.92 68.73 75.80 59.18 78.20
3 75.82 74.27 77.00 59.56 68.17
4 75.30 71.38 76.50 66.83 74.09
5 77.26 73.13 78.83 64.22 78.58
6 76.69 72.32 77.94 65.91 75.93
7 77.35 71.47 80.15 66.62 79.16
8 76.92 72.64 75.88 66.34 78.07
9 76.69 73.13 78.51 67.33 77.80
10 75.45 72.35 78.56 64.32 78.02
11 78.05 72.69 79.67 67.48 77.05
12 77.91 73.65 76.63 65.84 77.70
13 78.18 73.35 76.04 65.75 78.01
14 78.27 73.87 77.20 66.91 78.14
15 78.53 74.26 78.05 67.17 78.75
16 78.75 73.45 76.36 66.82 79.55
17 77.16 73.72 74.00 66.32 78.84
18 77.60 73.41 76.93 67.38 78.98
19 75.34 70.00 77.50 66.99 77.18
20 76.32 71.75 78.21 65.26 77.76
21 76.69 72.51 76.47 65.77 78.09
22 75.64 72.03 76.86 64.60 76.39
23 77.04 70.07 82.34 64.51 77.75

Median lane: 6-lane highway section

Time of day Mean speed (mph)
320 9904 9905
0 81.43 70.80 73.27
1 80.67 73.13 74.00
2 79.68 72.33 73.36
3 80.17 73.08 73.50
4 81.14 69.16 77.75
5 82.35 72.79 75.77
6 79.86 72.10 79.80
7 81.50 72.09 77.95
8 80.87 73.33 75.80
9 80.91 72.33 76.11
10 81.03 71.60 75.33
11 80.31 72.76 76.00
12 80.72 72.37 75.77
13 81.39 72.43 76.78
14 81.64 72.69 76.82
15 81.61 73.07 76.52
16 80.84 72.24 76.87
17 81.64 72.43 76.92
18 81.46 72.35 78.47
19 80.98 72.48 77.54
20 79.59 73.76 76.50
21 79.75 73.16 75.48
22 79.84 74.03 77.22
23 80.55 71.59 77.83