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speed¶
rate of change of a material entity's position with respect to a frame of reference
Clause: 3.7.2.1
Note 1 to entry: Speed is a function of time.
Note 2 to entry: Speed is the scalar absolute value (magnitude) of velocity.
History note: Introduced in ISO/TS 14812:2022
Specializations of speed¶
| Class | Description |
|---|---|
| high vehicle speed | speed of a vehicle that exceeds free flow motorway speeds by a factor of two or more |
| low vehicle speed | speed of a vehicle that exceeds pedestrian speeds and is more typical of pedal cycles |
| moderate vehicle speed | speed of a vehicle that exceeds moderately-low vehicle speeds but does not reach free-flow motorway speeds |
| moderately-high vehicle speed | speed of a vehicle that is typical of free-flow motorway speeds to twice that speed |
| moderately-low vehicle speed | speed of a vehicle that exceeds speeds typical of pedal cycles but can be reached on performance pedal cycles in short bursts or by performance riders |
| ultra-low vehicle speed | speed of a vehicle that does not greatly exceed typical pedestrian speeds |
Relationships for speed¶
| Property | Constraint |
|---|---|
| rateOfChangeOfPositionOf | exactly 1 owl::Thing |
References to speed¶
| Referencing Term | Type of Reference |
|---|---|
| high vehicle speed | subClassOf |
| low vehicle speed | subClassOf |
| moderate vehicle speed | subClassOf |
| moderately-high vehicle speed | subClassOf |
| moderately-low vehicle speed | subClassOf |
| ultra-low vehicle speed | subClassOf |