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 when he was returning to the 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 she appeared to be mentally deranged.