speed
The speed range of the vehicle. If the vehicle is powered by an engine, the upper limit of the speed range (indicated by maxValue) should be the maximum speed achievable under regular conditions.\n\nTypical unit code(s): KMH for km/h, HM for mile per hour (0.447 04 m/s), KNT for knot\n\n*Note 1: Use minValue and maxValue to indicate the range. Typically, the minimal value is zero.\n* Note 2: There are many different ways of measuring the speed range. You can link to information about how the given value has been determined using the valueReference property.
Definition from the Schema.org vocabulary (English).
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