Assertion: bus's speed | /r/HasProperty | 9 miles per hour
Facets:
value: based on the theory
type: OTHER
Source sentences:
text: In the 1960s, Reuben Smeed predicted that the average speed of traffic in central London would be 9 miles per hour (14 km/h) without other disincentives such as road pricing, based on the theory that this was the minimum speed that people will tolerate.