Hello, The reason you are running into that red line is because it is a 14hr shift violation. At the bottom of logbook you will see 3 boxes while that red line is showing, if you hover your mouse over the boxes you will see the line turn dark red when you are over the SHIFT box. I have never seen our software show incorrect hours, for that you would have to get into a chat session with one of our techs to take a look, www.logbook.com click on the chat now button on the right side. Here is a link for the FMCSA about HOS Rules, I hope this helps, let me know if you have other questions. http://www.fmcsa.dot.gov/rules-regulations/administration/rulemakings/rule-programs/rule_making_details.aspx?ruleid=214