Research on Subgrade Differential Settlement Control Standard and Treatment Technology Based on Driving Comfort

Table 1

Driving comfort control standards.

Vertical acceleration α (m/s^2)	α < 1.0	1.0 ≤ α < 1.6	1.6 ≤ α < 2.5	α ≥ 2.5
Human sense of comfort	Comfortable	Uncomfortable	Very uncomfortable	Extremely uncomfortable