Arlington’s bus service says a shortage of drivers and persistent maintenance problems are to blame for its struggles in providing consistent service these last few months.

Arlington Transit issued a statement to riders this past Friday (Jan. 18), explaining that some problems with the service’s contractor have caused a variety of “missed trips” recently.

The contractor in question, the U.K.-based National Express Transit Corporation, provides both bus drivers and maintenance services to run the county’s local and commuter buses. ART said in its blog post that National Express has recently “lost a number of bus operators to other companies in the region, and the resulting operator shortages are contributing to many missed ART trips each day.”

To make matters worse, ART says the company is also continuing to “deal with maintenance issues with our aging bus fleet, which is causing a number of buses to be out of service daily.”

ART last experienced similar problems this past June, when it commenced an expedited round of safety inspections. At the time, county officials also chalked up many of the problems to the age of its buses, though it was able to bring on 13 new buses this summer.

“The county continues to work with our contractor to improve service and ensure each ART route is operating with the number of buses needed each day,” ART officials wrote. “We apologize for these issues and will continue to do all things possible to hold our contractor accountable for providing reliable ART bus service.”

A spokeswoman for National Express did not immediately respond to a request for comment on these issues. ART has contracted with the company dating back to at least 2012, when National Express acquired a contract to provide ART service as part of the acquisition of the county’s old contractor.

The “ART Alert” Twitter account, which announces all bus delays and cancellations, reveals that bus service has indeed been inconsistent recently. The bus service reported 55 missed trips, mechanical issues or other delays over the course of the last week alone, according to the account, with routes running all across the county affected.

When it comes to the contractor’s problems retaining bus drivers, at least, it seems the company is hardly unique. Karen Finucan Clarkson, a spokeswoman for the Northern Virginia Transportation Commission, noticed the post from ART and pointed out that many other bus agencies are dealing with similar “bus driver shortages.”

“It is a statewide, regional and national issue, especially with unemployment so low,” Clarkson told ARLnow.

These service disruptions are simply the latest woes for ART, following a tough few months. Technical problems have also plagued its real-time bus tracking service in recent weeks, while its phone system to connect disabled and elderly riders to bus service crashed briefly this summer.

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