HELENA, Mont. (AP) — Higher speed limits and new sex-offender requirements are among the 165 new laws that take effect Thursday in Montana.

Sexual and violent offenders will be required to provide all email addresses and social media screen names for the state registry. Montana will spend an estimated $13,000 to include that information in electronic records.

Other changes include 80 mph speed limits on most interstate mileage within Montana and newly required chicken pox vaccinations in public schools.

A "Good Samaritan" law will shield people from minor-in-possession tickets if they seek medical treatment for themselves or others.

Additional disclosure requirements will be imposed on corporations attempting to influence elections.

Oct. 1 is the effective date of many new laws because it is the start of the new federal budget year.