Everyone should have to retake the driving test (both written and practical) every five years. And if you don't pass on the first try or are in a crash where you are found at fault, it should be bumped up to every year for the following five years.
People drive dangerously because they've forgotten rules, or rules have changed, or they've had a physical or cognitive decline. And yet we're like "yep, you took a test once decades ago, good to go."
Dangerous driving kills so many people.