Symbols and names of quality parameters

Range of quality parameters

q₁: Average Travel Cost

[1.4 Yuan/km, 2.0 Yuan/km]

q₂: Maximum Waiting Time during Peak Period

[5 min, 20 min]

q₃: Quantity of Available Taxis

[3500 vehicles, 5000 vehicles]

q₄: Drivers’ Service Attitude

{1, 2, 3, 4, 5}

q₅: Security Guarantee Level

{1, 2, 3}

q₆: Positioning Accuracy

{10 m, 50 m}