On Tuesday, North Dakota Gov. Jack Dalrymple signed a new law banning texting while driving. The law makes the state the 31st to ban texting behind the wheel.

The new law, which becomes effective August 1, will impose a fine of $100 on people caught texting while driving.

With the addition of North Dakota, 31 states, the District of Columbia and Guam have now banned text messaging by all drivers. Eight states, the District of Columbia and the Virgin Islands have prohibited all hand-held cell phone use while driving.

In 2009, Department of Transportation Secretary Ray LaHood launched a national anti-distracted driving campaign modeled on other successful National Highway Traffic Safety Administration efforts to reduce fatalities, such as its, “Over the Limit. Under Arrest.,” and “Click It Or Ticket” campaigns to curb drunk driving and increase seat belt use.