Fine for texting whilst walking – negative externalities

An American town has been so annoyed by people texting whilst walking that it has decided to fine anyone caught doing so. This is a perfect example for negative externalities Students could read the article and discuss the following points

1. What are the negative externalities of texting whilst walking?
2. Do you think a fine will be successful in reducing the number of people texting whilst walking
3. Discuss the possible effectiveness of other solutions to the problem