I-14 littering signs are normally the type of anti-littering signs used on conventional highway entry points to the commonwealth. The signs may also be used in areas of concentrated tourism or scenic beauty where littering is especially discouraged; At pull-off areas and other sites that may be prone or susceptible to littering due to a combination of factors (remoteness of location, proximity to commercial areas with fast-food establishments, etc.), at locations that experience frequent littering and at a reasonable number of other locations for public education.