Crossing the line separating Indiana and Illinois sometimes means dealing with different laws and customs. Readers are asked to share ideas for this weekly feature. This week: Mobile phones.

Talking on a mobile phone held to your ear while driving through Dyer on U.S. 30 is perfectly legal, but that same behavior one mile west will get you a $75 ticket in Sauk Village.

Illinois police this year began enforcing one of the strictest state distracted driving laws in the country.

Mobile phone use while driving in Illinois must be hands-free at all times, except in an emergency. Texting while driving also is prohibited.

In Indiana, talking on a mobile phone while driving is allowed, except for drivers younger than age 18.

Texting while driving in Indiana is barred unless the vehicle is stopped at a red light, stop sign or deployed railroad crossing gate.