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Table 2 Precision and detection rate in detecting 11 driving events (SA, SB, SL, SR, A, B, L, R, CL, CR, and U)

From: A method for driving event detection using SAX with resource usage exploration on smartphone platform

Driving event Number of Precision Detection
  detected events   rate
Sudden acceleration 3 66.67% 37.5%
(SA)   (2 of 3) (3 of 8)
Sudden brake 4 50% 25%
(SB)   (2 of 4) (2 of 8)
Sudden left turn 3 66.67% 25%
(SL)   (2 of 3) (2 of 8)
Sudden right turn 5 60% 27.27%
(SR)   (3 of 5) (3 of 11)
Acceleration 3 66.67% 50%
(A)   (2 of 3) (2 of 4)
Brake 1 100% 20%
(B)   (1 of 1) (1 of 5)
Left turn 1 100% 16.67%
(L)   (1 of 1) (1 of 6)
Right turn 4 100% 20%
(R)   (4 of 4) (1 of 5)
Lane change left 1 100% 16.67%
(CL)   (1 of 1) (1 of 6)
Lane change right 1 50% 100%
(CR)   (1 of 2) (1 of 1)
U-turn 7 71.43% 100%
(U)   (5 of 7) (1 of 1)