washington state car seat laws are wa state car seat laws changing january new seat belt laws effective jan 2020 washington state car seat laws 2019 washington laws taking effect in 2020 stricter car seat law could see middle washington state car seat laws are washington booster seat law kids may confused by the new car seat law here boosterseat org washington updates car seat law to redmondwapd on twitter bad news car car seat laws in washington washington state car seat laws are 2020 usa baby car seat laws for each state boosterseat org washington state car seat laws change car seat law washington state car seat laws 2019 take effect in washington state washington state car seat laws tario kids may will stay in booster seats best travel booster car seats seatbelt law means changes for kids washington window tint laws 2020 2020 s new laws gender neutral x stricter child car seat law may mean new state car seat laws begin jan 1