Table 3.
Labeling used, and interpretations found in the literature, for fixations in the Far road.
| Fixation class | Characterization | Interpretations available in the literature | |
|---|---|---|---|
| 1 | Near path | The road surface immediately in front of the vehicle that the vehicle will imminently travel over (path). | Compensatory control in a two-level framework (Donges, 1978); Near Point in a two-point model (Salvucci and Gray, 2004). |
| 2 | Far path | The road surface ahead, in the bends at the tangent point level. | Anticipatory control in a two-level framework (Donges, 1978); Far Point in a two-point model (Salvucci and Gray, 2004). Guiding fixations on the Future Path (Boer, 1996, 2016; Wann and Land, 2000; Wann and Swapp, 2000; Wann and Wilkie, 2004; Wilkie et al., 2008). |
| 3 | Far path (look-ahead fixation) | The road surface further ahead, in the bends beyond the tangent point level. | Guiding fixations/Look-ahead fixations on the Future Path (Lehtonen et al., 2013, 2014). Gaze polling (Wilkie et al., 2008). |
| 4 | Occlusion point | The furthest point the road surface is continuously visible to. | Look-ahead fixations; trajectory planning and/or monitoring oncoming traffic (Lehtonen et al., 2013, 2014). |
| 5 | Tangent point (road/path edge) | Where the visual orientation of the lane edge reverses its direction. | Steering by the Tangent Point (Raviv and Herman, 1991; Land and Lee, 1994); Far point in a two-point model (Land, 1998). |
| 6 | Path edges | The edges of the driver's own lane in the far region, where they constrain the path the driver can choose. | Road geometry constraints on the Field of Safe Travel (Gibson, 1938); potential Line Crossing locations (Godthelp, 1986); Safety Line (Mars and Navarro, 2012). |
| 7 | Road edge | The edge of the opposing lane. | Potential Line Crossing locations? |