Observed arrival · 2026-09-25
Gapvera’s proposed “Wait or Clear” signal for blind left turns
Gapvera is developing a roadside signal that uses an intersection’s existing traffic camera to estimate whether an oncoming gap is long enough for a left turn.
- For
- City and county traffic departments
- Worth noticing
- Five selectable clips use Bellevue Traffic Video Dataset footage; the site says the overlays are the prototype’s own output.
Field notes
The proposed sequence is camera observation, vehicle tracking, an estimate of arrival at the turning path, then a Wait or Clear indication beside the existing signal. The page presents footage from two Bellevue intersections, including a clip labeled for a bus, and says its overlays are the prototype’s own output. It also states that the prototype remains in development, so the clips are demonstrations rather than evidence of a deployed intersection system.
Observed signals
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Editorial observations of this landing page, not a rating.
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