I think it goes without saying that speeding is the breaking of a civil law, not a moral law, and yet Paul and Peter both taught that Christians have a moral obligation to obey the civil laws of the land:

Let every person be subject to the governing authorities. For there is no authority except by God’s appointment, and the authorities that exist have been instituted by God. 13:2 So the person who resists such authority resists the ordinance of God, and those who resist will incur judgment. 13:5 Therefore it is necessary to be in subjection, not only because of the wrath of the authorities but also because of your conscience. (Romans 13:1-2, 5)

Be subject to every human institution for the Lord’s sake, whether to a king as supreme 2:14 or to governors as those he commissions to punish wrongdoers and praise those who do good. 2:15 For God wants you to silence the ignorance of foolish people by doing good. (I Peter 2:13-15)

Neither text says it is morally wrong to disobey civil laws, but is this implied? Yes? No?

What about speeding? It is the breaking of a civil law. If these passages imply that breaking a civil law is a moral failure, that would mean that speeding is morally wrong. But I find it hard to believe that it could be a moral issue, because the speed at which one travels is not a moral matter. Disobedience to established authorities, however, is a moral matter. So could it be that speeding is immoral, not because one is speeding, but because one is disobeying God-established civil authority?

What about this take on the issue? A chunk of the concern that motivated Peter and Paul to pen those words was the preservation of the reputation of Christians as law-abiding citizens, not enemies of the state. If Christians were disregarding the laws of the land, they would be marked out as troublemakers and would be persecuted against. To avoid that, the apostles taught strict adherence to civil law. Given the prevalence of speeding in all segments of our society, do you think Christians who speed would give a bad reputation to Christians as Christians? Would the name of Christ be tarnished because I am going 77 in a 65?