BEST PRACTICES FOR TRANSPORTATION AGENCY USE OF SOCIAL MEDIA
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social media. These services enable people to attach location information
to their existing online social networking activities in a variety of ways.
The location attribute can provide useful information about daily activi-
ties and interactions with surrounding environments and social networks.
Examples of location-based services include systems by which users
can upload geotagged photos to an online photo sharing system such as
Flickr (Hollenstein and Purves 2010). They can send status messages in
real time about an event from the place where the event is happening,
for instance, via Twitter (Sakaki et al. 2010; Collins et al. 2012). Users ca