Before revision: Traffic calming can include the following engineering measures, grouped by similarity of method: Narrowing: Narrowing traffic lanes makes slower speeds seem more natural to drivers and are less intrusive than other treatments that limit speed or restrict route choice.
After revision: Physical traffic calming can include the following engineering measures, grouped by similarity of method: Narrowing: Narrowing traffic lanes makes slower speeds seem more natural to drivers and are less intrusive than other treatments that limit speed or restrict route choice.