*3.2. Tra*ffi*c Sign Recognition*

In this phase, TSs previously detected by their shape are classified with their final label. In some TSs, their shape coincides with their final class, as in the case of stop signs (octagonal) and yield sign (inverted triangle). TSs of obligation (circular), recommendation–information (square), and danger (triangular) encompass multiple classes that must be classified for a correct inventory. For each of these three sign shapes, an InceptionV3 network [59] has been trained and implemented. The InceptionV3 network needs input samples of fixed size 299 \* 299 \* 3 pixels, the bounding boxes images of detected signs S are resized to adapt them to the network input.
