The Rockville City Police Department (RCPD) is offering safety tips for trick-or-treating, urging caution for both drivers and parents to ensure a safe Halloween. Per RCPD: “There are no set hours for trick-or-treating. The Rockville City Police Department urges drivers to be aware of extra pedestrians in neighborhoods. Homeowners should clear yards and sidewalks of obstacles, keep homes well-lit inside and out, and report any suspicious activity to police.