Analysts seem divided on whether this is the start of a more flexible currency regime for China or an old-style devaluation. It appears to be a bit of both. China's economy has been struggling and a weaker currency would give it a boost, although most commentators say a steeper fall would be needed for a real impact.
The length of time depends on the severity of the offense. Most points (illegal turn, not making a complete stop, driving over the speed limit, etc.) and/or accidents will stay on your driver record for 39 months (3 years, 3 months). Points for more serious offenses, such as hit-and-run or a DUI, will stay on your record for 13 years.
Every ticket you receive in Michigan will remain on your record for two years from the date of your conviction. If you pay the ticket, this is two years from the date you pay. If you contest the ticket, it is two years from the date you are convicted in traffic court.