Statements (50)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Traffic control device
|
| gptkbp:alsoKnownAs |
gptkb:Traffic_signal
gptkb:Stoplight Traffic lamp |
| gptkbp:colorOrder |
Red-Yellow-Green
|
| gptkbp:component |
Green light
Red light Yellow light |
| gptkbp:deployment |
gptkb:London
|
| gptkbp:featuredIn |
gptkb:infrastructure
Public education Road safety campaigns |
| gptkbp:function |
Control flow of traffic
|
| gptkbp:greenLightMeaning |
gptkb:Go
|
| https://www.w3.org/2000/01/rdf-schema#label |
Traffic light
|
| gptkbp:inventedBy |
gptkb:J.P._Knight
|
| gptkbp:maintenance |
Municipal authorities
|
| gptkbp:modernTechnology |
LED lights
|
| gptkbp:operatedBy |
Automatic control
Manual control |
| gptkbp:powerSource |
Electricity
|
| gptkbp:previousTechnology |
Incandescent bulbs
|
| gptkbp:redLightMeaning |
Stop
|
| gptkbp:regulates |
Traffic laws
|
| gptkbp:standardizedBy |
gptkb:Vienna_Convention_on_Road_Signs_and_Signals
|
| gptkbp:subjectOf |
Urban planning
Traffic engineering Autonomous vehicle navigation Human factors research Signal timing optimization Smart city technology |
| gptkbp:symbolizes |
gptkb:legislation
gptkb:state_order Safety |
| gptkbp:usedIn |
Pedestrian crossings
Railway crossings Road intersections |
| gptkbp:variant |
Countdown timers
Pedestrian signals Arrow signals Audible signals Bicycle signals Emergency vehicle preemption Flashing signals Railway signals Transit signals |
| gptkbp:yearInstalled |
1868
|
| gptkbp:yellowLightMeaning |
Caution
|
| gptkbp:bfsParent |
gptkb:road
|
| gptkbp:bfsLayer |
4
|