Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:person
|
| gptkbp:activeIn |
20th century
|
| gptkbp:contribution |
added yellow/amber light to traffic signals
|
| gptkbp:employer |
gptkb:Detroit_Police_Department
|
| gptkbp:field |
traffic control
|
| https://www.w3.org/2000/01/rdf-schema#label |
William Potts
|
| gptkbp:nationality |
gptkb:American
|
| gptkbp:notableFor |
inventing the modern traffic light
|
| gptkbp:occupation |
gptkb:police_officer
|
| gptkbp:bfsParent |
gptkb:Potts
gptkb:Victoria_Cross_(members_awarded) |
| gptkbp:bfsLayer |
7
|