Ok. I agree that distance between Pavagada and Penukonda is less. But this tip can be useful for people travelling through Ballari and Chitradurga region. For people travelling through Ballari and Chitradurga region entering Pavagada through Challakere is shortest. For people entering through Andhra obviously Pavagada to Penukonda is shortest. Don't mistake me. As Pavagada is sandwiched between Karnataka and Andhra Pradesh people can have different routes by train and bus as per their proximity. I have just given one possibility. People can choose their route depending upon their location.