Charleston Police have responded to what’s being called a “serious” collision on Johns Island Monday afternoon. According to officials. the wreck happenedin the 3100 block of Cane Slash Road. Current Roadway Conditions: ABC News 4 Live Traffic Map. Injuries have been reported and other motorists are asked to avoid the area as of 1:30 p. m. The investigation is ongoing. Plan your drive with the ABC News 4 Live Traffic Map.