Abstract

Detection and recognition of traffic signs is an essential task of regulating the traffic, guiding and warning driver’s pedestrians. In traffic sign detection research are categorized into three groups. The first group of researchers believes that traffic sign detection colors are important information by which traffic signs can be detected and classified. The second group believes that detection of traffic signs can be achieved by traffic sign shape only, and the third believes that color together with shape make the backbone for any road sign detection. Although traffic signs are apparent and have several obvious characteristics, some conditions may prevent driver perceiving them. For instance, at night or in bad lighting conditions drivers are less likely to notice the traffic signs. Some distracting events on road may result in a skip of signs. Moreover, sometimes only the driver himself is not able to notice the signs due to lack of concentration. Driving needs continuous processing of visual information from the road. To avoid accident, driver needs to monitor a lot of traffic signs. For this purpose traffic signs play an important role to provide information about traffic and road conditions which is necessary for a driver to ac accomplish a collision free driving environment.