It is also common in some places to shorten the official name of streets which have long names. For example, many streets named for Massachusetts are often referred to as "Mass Ave"; Boston's Commonwealth Avenue is often called "Comm Ave"; Manhattan's Lexington Avenue is often simply called "Lex" and Madison Avenue, "Mad"; Charlottesville, Virginia's Jefferson Park Avenue is simply "JPA"; in Williamsburg, Virginia, Duke of Gloucester Street is often referred to as "DOG Street". In Chicago, Lake Shore Drive is commonly abbreviated to "LSD". In Portland, Oregon, the Martin Luther King, Junior Boulevard is abbreviated to "MLK Jr. Blvd.", while people in Chicago often refer to Martin Luther King Jr. Drive as "King Drive". Oregonians, when referring to the Tualatin Valley Highway west of Portland, often say and write "TV Highway". In Toronto, the Don Valley Parkway is commonly referred to as the "DVP" (and jocularly the Don Valley Parking Lot due to high congestion). In Columbus, Ohio, Chittenden Avenue near the Ohio State University is often informally referred to as "Chit", reflected in local event names such as "ChitShow" and "ChitFest". In rare cases, highway numbers may be used as shorthand for streets that have (or once had) such a designation. An example of this form of shortening is the common reference of Hurontario Street in the Toronto suburb of Mississauga, as "Highway 10".