Table 4.

Total number of intervals identified as “stress” (in %), considering the SVM classifier for each subject and each road segment (in the two driving situations). The numeric difference between them (with traffic–no traffic) is also displayed.

SVM-Highway
Subject	1	2	3	4	5	6	7	8	9	10	Mean (%)
$\% “1” \mathrm{Traffic}$	59.38	60.00	43.55	59.30	61.40	95.00	57.14	88.33	67.86	75.00	66.70
$\% “1” \mathrm{No\; traff}.$	34.78	68.33	57.69	54.55	24.00	3.85	53.33	15.38	14.00	80.00	40.59
$\% “1” \mathrm{Diff}.$	24.59	−8.33	−14.14	4.76	37.40	91.15	3.81	72.95	53.86	−5.00	26.10
SVM-City Route
Subject	1	2	3	4	5	6	7	8	9	10	Mean (%)
$\% “1” \mathrm{Traffic}$	38.36	49.23	43.75	14.77	46.27	62.67	74.24	95.52	64.62	34.52	52.39
$\% “1” \mathrm{No\; traff}.$	1.79	33.80	38.46	64.79	49.28	8.45	15.63	4.48	32.35	39.73	28.87
$\% “1” \mathrm{Diff}.$	36.57	15.43	5.29	−50.02	−3.01	54.22	58.62	91.04	32.26	−5.20	23.52