of the Greater Baltimore Bus Initiative took effect in 2005, only seven M-lines remained, though this increased to eight after Route M-6 was restored months later. Throughout 2008 and 2009, all M-lines were renamed to plain two-digit numerical designations, ranging from 52 to 54 and 56 to 60. During this series of revisions, route changes were also made to some of them, including merging some, splitting others, and eliminating part of Route M-17 without any replacement. Express, Commuter, and Intercounty Connector buses The MTA's express routes should not be confused with the "express" trips assigned to several of the local bus routes. Express routes are dedicated to providing rapid service by limiting the number of stops along the route. The number of express routes has declined over the past two decades as new rapid transit services have been constructed, and poor-performing routes were eliminated or consolidated. Unlike the commuter buses, express bus routes serve areas where local buses are available. Comparable slower trips can also be accomplished with local buses. Commuter routes, however, provide service between locations not connected by local bus routes. Both the express and commuter routes, identified with 3-digit numbers, offer limited service mostly during weekday rush hour between downtown Baltimore or Washington and various Park-and-Ride lots or other suburban locations in the state of Maryland. The commuter routes, designated with higher numbers, are operated by contractors rather than MTA employees. The newest addition to the commuter bus service since 2010, known as Intercounty Connector or ICC for short, operates from Gaithersburg to BWI Marshall Airport, University of Maryland College Park or DoD/Fort Meade, traveling along the newly built Intercounty Connector expressway in central Maryland. Neighborhood Shuttle Bug Two of the local routes MTA operates are considered neighborhood shuttles, also known as Shuttle Bugs. These local routes focus on a specific neighborhood and the transportation of persons within these communities. During the early 2000s, MTA introduced two such routes. These routes, rather than operating like others around town, have differences that include: Reduced fare for a single ride: $1.00 rather than the $1.60 charged on regular buses. MTA unlimited ride passes (also known as "GO-passes") also cover the fare. In 2006, three shorter, distinctively painted buses, 30-foot Opus buses were purchased and are used exclusively by the Mondawmin shuttle. The Opus buses are the only non 40- and 60-foot buses in MTA's fleet; held at Northwest (4)