Figure 1 Hourly Variations of Average Lane Mean Speeds,,,,,
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,
,,,,