Influence of Landscape Design on Driving Behavior Based on Slope Illusion

Table 6

Comparative analysis of subjective equivalent speed.

	Scene 1	Scene 2	Scene 3	Scene 4	Scene 5	Scene 6	Scene 7	Scene 8	Scene 9
SSES (km/h)	64.41	75.54	70.29	68.61	76.54	66.32	78.54	80.71	79.42
Speed illusion	+25.59	+14.46	+19.71	+21.39	+13.46	+23.68	+11.46	+9.29	+10.58
Speed illusion degree (%)	+28.43	+15.71	+21.90	+23.76	+14.96	+26.31	+12.73	+10.32	+11.75

Note. Subjective equivalent speed (SSES) refers to the actual vehicle speed of the comparison scene when the perceived speed of the comparison scene is equal to the standard scene; speed illusion = actual vehicle speed in the standard scene–SSES; speed illusion degree = (the actual vehicle speed in the standard scene–SSES)/the actual speed of the standard scene.