The Los Angeles Metropolitan Transportation Authority (Metro) is moving to rename its new and existing rail and bus rapid transit lines.

Metro staff this week recommended a new plan that aims to create a “clear, consistent, [and] uniform wayfinding system” for the transit authority and its 34 million annual riders. The proposed changes would replace the existing color-based nomenclature—Blue, Red, Purple, Gold, Orange, Silver—with letters and colors for the system’s major lines.

If adopted as proposed, the transition to the new naming system could begin as early as 2019 when the Blue Line re-opens as the A Line after extensive renovations. In coming years, the so-called Regional Connector project currently being built to connect a pair of lines that dead-end into Downtown Los Angeles will come online, as well, reorganizing and consolidating the number of existing transit lines. Officials hope that the new naming system reduces confusion and makes traveling across the system smoother for local strap-hangers and tourists alike.

The proposed policy is a result of extensive study and ridership polling that asked respondents to choose between different configurations of numbered, colored, and lettered options. Eventually, it was decided that a combination of approaches worked best and allowed for the most flexibility, considering that many of the forthcoming lines and extensions are still in the early planning stages and the ultimate configuration of the transit system is still unknown.

The changes come as the city works to dramatically expand L.A.’s transit system before the 2028 summer Olympics. Before then, Metro aims to complete 28 major transit projects across the region, including the construction of several new lines and extensions, in addition to the Regional Connector project.