Table 2: Computational results for the 40 test problems.

ProblemSALBM gap1
(%)
gap2
(%)
Percentage of satisfied
freight demand (%)
Tractor
quantity
CO2 emissions
per ton-kilometer (g/tm)
Percentage of satisfied
freight demand (%)
Tractor
quantity
CO2 emissions
per ton-kilometer (g/tm)

RAND5-1861351.85861250.393.832.90
RAND5-2861454.65861249.010.9911.51
RAND5-3871249.99871549.161.301.69
RAND5-4881649.99861550.273.590.56
RAND5-5891057.33871250.203.4414.20
RAND5-6881550.56881749.852.721.42
RAND5-7881349.97861449.131.241.71
RAND5-8861650.74871950.784.640.08
RAND5-9891450.77891851.295.691.01
RAND5-10851449.17852050.143.321.93
RAND6-1851448.95851950.353.752.78
RAND6-2901948.92892549.862.741.89
RAND6-3861850.13862350.794.661.30
RAND6-4861749.97861848.890.742.21
RAND6-5891448.71881849.221.421.04
RAND6-6861648.70862450.253.543.08
RAND6-7901748.82892549.862.742.09
RAND6-8881749.82862049.502.000.65
RAND6-9901748.64892549.952.932.62
RAND6-10881848.73862750.353.753.22
RAND7-1902149.84882650.123.280.56
RAND7-2861750.37871950.594.240.43
RAND7-3901849.13892754.0311.339.07
RAND7-4861949.72852250.053.130.66
RAND7-5851652.36851653.089.381.36
RAND7-6851451.95851251.816.760.27
RAND7-7851452.08851453.179.562.05
RAND7-8851652.77851653.7910.841.90
RAND7-9851354.79881353.5810.412.26
RAND7-10851655.69851553.049.295.00
RAND8-1862149.49863249.742.490.50
RAND8-2882452.82891349.572.146.56
RAND8-3892451.35892650.624.311.44
RAND8-4882451.68892050.173.383.01
RAND8-5882350.83882450.514.080.63
RAND8-6892254.88892253.9611.191.70
RAND8-7882253.04892250.333.715.38
RAND8-8872252.82872650.844.763.89
RAND8-9872749.99873852.057.253.96
RAND8-10872650.95873652.618.413.16