Question This sign means: Answers Minimum speed limit is 40 mph. No turn on red. Fines double in work zone. Added lane. Explanation Regulation signs regulate traffic speed and movement, displaying rules which drivers must obey. This sign indicates a minimum legal driving speed and drivers should not drive below the speed posted. Pass your DMV Written Test with flying colors Take me to the cheat sheet Indiana This questions appears in the following tests: Indiana Practice Test 14 Indiana Practice Test 41 Alaska Practice Test 85 Colorado Practice Test 44 Florida Practice Test 112 Hawaii Practice Test 140 Idaho Practice Test 103 Indiana Practice Test 140 Louisiana Practice Test 110 Massachusetts Practice Test 6 Michigan Practice Test 67 Minnesota Practice Test 152 Missouri Practice Test 169 Montana Practice Test 52 Nevada Practice Test 155 New Hampshire Practice Test 38 New Jersey Practice Test 106 North Carolina Practice Test 171 North Dakota Practice Test 127 Ohio Practice Test 24 Oregon Practice Test 75 Pennsylvania Practice Test 15 Texas Practice Test 172 Utah Practice Test 54 Vermont Practice Test 160 Virginia Practice Test 168 Washington Practice Test 6 West Virginia Practice Test 96