Speed Limits At 4front Driving School we encourage our students to be observant towards speed limit signs and look out for the change of speed which is more likely to be placed at the junction to a new road, but can also appear at points on a long carriageway too. National Speed Limit This sign indicates that the national speed limit applies, which is for cars 60mph on a single carriageway or 70mph on a dual carriageway or motorway. It doesn’t necessarily mean that the road is safe to do 60mph or 70mph all the times – there may be sharp bends and other challenging sections, especially on a single carriageway road. Therefore you as a driver have a responsibility to judge the safest speed to suit the road and the driving conditions. To begin with when learning to drive we say to our learners to drive at a speed they feel comfortable with. Once you have built up your confidence you can aim towards achieving a safe speed to drive at. Remember it can also be dangerous driving to s...