Since texting while driving generates a negative externality,banning texting while driving would necessarily be economically efficient.

Negative Externality

A cost that affects a party who did not choose to incur that cost, often associated with environmental damage, public health issues, or other societal impacts.

Texting While Driving

The act of composing, sending, or reading text messages, emails, or making similar use of the web on a mobile phone while operating a motor vehicle.

Economically Efficient

A situation in which resources are allocated in a way that maximizes the net benefit to society.