TY - JOUR
PY - 2018//
TI - Steering bends and changing lanes: the impact of optic flow and road edges on two point steering control
JO - Journal of vision
A1 - Okafuji, Yuki
A1 - Mole, Callum David
A1 - Merat, Natasha
A1 - Fukao, Takanori
A1 - Yokokohji, Yasuyoshi
A1 - Inou, Hiroshi
A1 - Wilkie, Richard McGilchrist
SP - e14
EP - e14
VL - 18
IS - 9
N2 - Successful driving involves steering corrections that respond to immediate positional errors while also anticipating upcoming changes to the road layout ahead. In popular steering models these tasks are often treated as separate functions using two points: the near region for correcting current errors, and the far region for anticipating future steering requirements. Whereas two-point control models can capture many aspects of driver behavior, the nature of perceptual inputs to these two "points" remains unclear. Inspired by experiments that solely focused on road-edge information (Land & Horwood, 1995), two-point models have tended to ignore the role of optic flow during steering control. There is recent evidence demonstrating that optic flow should be considered within two-point control steering models (Mole, Kountouriotis, Billington, & Wilkie, 2016). To examine the impact of optic flow and road edges on two-point steering control we used a driving simulator to selectively and systematically manipulate these components. We removed flow and/or road-edge information from near or far regions of the scene, and examined how behaviors changed when steering along roads where the utility of far-road information varied. While steering behaviors were strongly influenced by the road-edges, there were also clear contributions of optic flow to steering responses. The patterns of steering were not consistent with optic flow simply feeding into two-point control; rather, the global optic flow field appeared to support effective steering responses across the time-course of each trajectory. Language: en
LA - en
SN - 1534-7362
UR - http://dx.doi.org/10.1167/18.9.14
ID - ref1
ER -