Description of classes

The class number vs class label

0 = Speed limit (20km/h)
1 = Speed limit (30km/h)
2 = Speed limit (50km/h)
3 = Speed limit (60km/h)
4 = Speed limit (70km/h)
5 = Speed limit (80km/h)
6 = End of speed limit (80km/h)
7 = Speed limit (100km/h)
8 = Speed limit (120km/h)
9 = No passing
10 = No passing for vehicles over 3.5 metric tons
11 = Right-of-way at the next intersection
12 = Priority road
13 = Yield
14 = Stop
15 = No vehicles
16 = Vehicles over 3.5 metric tons prohibited
17 = No entry
18 = General caution
19 = Dangerous curve to the left
20 = Dangerous curve to the right
21 = Double curve
22 = Bumpy road
23 = Slippery road
24 = Road narrows on the right
25 = Road work
26 = Traffic signals
27 = Pedestrians
28 = Children crossing
29 = Bicycles crossing
30 = Beware of ice/snow
31 = Wild animals crossing
32 = End of all speed and passing limits
33 = Turn right ahead
34 = Turn left ahead
35 = Ahead only
36 = Go straight or right
37 = Go straight or left
38 = Keep right
39 = Keep left
40 = Roundabout mandatory
41 = End of no passing
42 = End of no passing by vehicles over 3.5 metric tons