Table 4

Selection of typical O-D pairs at different distances

O-D pair type (distance)Typical O-D pairActual length/km
Short distance (about 200 km)Beijing-Cangzhou210
Medium distance (about 500 km)Beijing-Qufu535
Medium-long distance (about 1,000 km)Beijing-Nanjing1,023
Long distance (over 1,300 km)Beijing-Shanghai1,318

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