Final answer:
The length of a suspension for accumulating 8 points in 18 months varies by jurisdiction, and without specific location details, it is not possible to accurately determine whether it is 60, 90, 180 days, or 1 year.
Step-by-step explanation:
The length of a suspension for accumulating 8 points in 18 months will vary depending on the state or country's traffic laws. Generally, the number of points and the corresponding suspension period are part of a driver's license point system used to penalize unsafe driving behaviors. Without knowledge of the specific jurisdiction's laws, it is not possible to provide an accurate answer to whether a second suspension for accumulating 8 points in 18 months is 60 days, 90 days, 180 days, or 1 year. It is advised to check the local Department of Motor Vehicles (DMV) or equivalent authority for the correct information.