Munda's car was at a safe distance and the driver of the pilot car managed to maintain the speed that avoided any pile-up of cars following it, the sources said.
The incident happened during Munda's "Johar Yatra (road tour)" of the district, and he was returning to Circuit House after attending a programme near the block office, the police said.
The police said the woman was taken into custody for questioning and 'that she appeared to be mentally deranged'.