Video unavailable. Open the source below.
NewHow it uses Jev
Inference from the creator's description and the observed JevCity recording: Jev appears to choose traffic-light phases from traffic conditions, and the interface presents a phase choice and confidence for each light. The recording labels Jev/TypeSafe, shows the grid updating, and reports arriving cars, average wait, Jev latency, and a rationale. The source does not disclose the exact traffic-state input, request schema, model-call implementation, or how the selected phase is applied to each light. The roughly 300 ms update interval is stated in the interface, but the recording does not establish whether that is the Jev call cadence or a display/update interval.
Why it is interesting
JevCity makes a model decision visible as a changing physical-style system: light phases, vehicle arrivals, wait time, and the explanation appear together. It offers a concrete illustration of repeated decision-making under changing conditions, while leaving the underlying traffic model and request implementation undisclosed.