Many new laws and policies in Colorado will take effect in 2025. For example, a new law will tighten restrictions on using your phone while driving in Colorado. In 2025, you can not hold your phone while driving. The first offense will result in a $75 fine. New laws regarding child safety seats will also take effect. The state of Colorado is raising the age requirement for a booster seat to nine years old as well as raising the age for rear-facing car seat requirements.