TABLE 1 - Work Zone Platoon Characteristics,,,,,,,
,,,,,,,
A. Short-Term Work Zone,,,,,,,
Platoon size,Truck-leading platoon,,,Nontruck-leading platoon,,,
,Relative frequency,Headway (seconds),Gap (seconds),Relative frequency,Headway (seconds),Gap (seconds),
2,0.451,2.819,1.991,0.553,2.045,1.680,
3,0.241,2.593,1.857,0.241,2.098,1.699,
4,0.165,2.398,1.751,0.093,2.167,1.735,
5,0.057,2.201,1.627,0.059,2.129,1.693,
6,0.035,2.109,1.577,0.017,2.333,1.852,
7,0.032,2.263,1.733,0.012,2.109,1.685,
8,0.003,2.344,1.510,0.010,2.212,1.740,
9,0.006,2.394,1.575,0.010,2.243,1.741,
10,0.003,3.348,2.732,0.003,2.598,2.082,
11,0.003,2.321,1.714,—,—,—,
12,—,—,—,—,—,—,
13,—,—,—,—,—,—
14,—,—,—,—,—,—
15,0.003,2.267,1.649,—,—,—
?16,—,—,—,—,—,—
Average,3.20 (size),2.611,1.872,2.89 (size),2.085,1.696

B. Long-Term Work Zone,,,,,,
Platoon size,Truck-leading platoon,,,Nontruck-leading platoon,,
,Relative frequency,Headway (seconds),Gap (seconds),Relative frequency,Headway (seconds),Gap (seconds)
2,0.450,2.356,1.739,0.524,1.719,1.416
3,0.243,2.194,1.575,0.228,1.756,1.439
4,0.117,2.017,1.447,0.118,1.853,1.514
5,0.077,1.974,1.482,0.055,1.828,1.467
6,0.049,1.856,1.371,0.031,1.844,1.438
7,0.019,1.915,1.427,0.016,1.705,1.303
8,0.019,2.077,1.529,0.01,1.533,1.216
9,0.007,2.074,1.448,0.006,2.242,1.667
10,0.007,2.194,1.755,0.003,1.690,1.304
11,0.001,1.560,1.293,0.002,2.135,1.726
12,0.007,1.991,1.532,0.003,1.956,1.546
13,—,—,—,0.001,2.305,1.864
14,—,—,—,0.001,1.933,1.660
15,—,—,—,—,—,—
16,—,—,—,—,—,—
17,0.001,1.588,1.246,0.001,2.185,1.608
18,0.001,1.566,1.249,0.001,2.155,1.758
19,—,—,—,—,—,—
?20,0.001,2.084,1.744,—,—,—
Average,3.38 (size),2.2,1.612,3.06 (size),1.757,1.436