IELTS Vocabulary: paraphrasing

In last Sunday's lesson I wrote that an advanced user of any language is someone who can express the same idea in a variety of ways. When you do this, you are paraphrasing.

Let's practise paraphrasing some of the ideas from Friday's speaking lesson. Can you express the ideas below in one or two (or more) different ways? Note: you don't need to use exact synonyms - just make sure you communicate the same overall idea.

1. Traffic clogs up the main street.
2. Local people need to bring the problem to light.
3. They should come up with some possible designs.
4. This would have a positive knock-on effect.