Angie Schmitt

The D.C. Metro was shut down for 29 hours straight earlier this week while inspectors checked for defects in jumper cables, which transmit power between sections of the electrified third rail, along all the track in the system. To its credit, WMATA publicly documented the process.

Today's emergency 24-hour shutdown of the D.C. Metro system is a transit embarrassment of epic proportions. The shutdown follows an electrical fire in a subway tunnel Monday, and will allow for system-wide safety inspections. Metro has been under federal control following a smoke inhalation death caused by a similar problem last year.

In a win for bike and pedestrian safety, the Federal Highway Administration announced yesterday that it will require state transportation agencies to do something they have never had to do before: set goals to reduce bike and pedestrian fatalities, and track progress toward attaining those goals.

If shared fleets of self-driving cars really do hit the streets in the next decade, some big changes are on the horizon. One of the biggest is that individual car ownership will become much less common.

Last week we highlighted the Photoshop work of Memphis resident David Lindsey, who updated Georges Seurat's “A Sunday Afternoon on the Island of La Grande Jatte” to comment on the way cars have come to intrude on almost every public space. Lindsey was motivated by the decision to allow overflow parking from the Memphis Zoo in the city's historic Overton Park, but his concept quickly inspired activists in other cities.

Sharrows, what are they good for? A recent study suggests that one thing shared lane markings don't do is improve safety for cyclists. The conclusion has sparked an online debate and some detailed defense of sharrows in the right conditions.

Cars are a very inefficient transportation technology for too many reasons to count. They take up huge amounts of space but get driven around mostly empty -- the average private car in the U.S. carries only 1.6 people. A lot of the time, people drive distances that are short enough to easily walk or bike -- 28 percent of car trips are a mile or less, according to the Governors Highway Safety Association.

Does your city have what it takes to compete in Streetsblog's fourth annual Parking Madness tournament? Who will join Tulsa, Rochester, and Camden, NJ, as winners of the coveted "Golden Crater"?

Rental assistance from HUD isn't enough to make the cost of living affordable when the subsidies go toward housing in car-dependent areas, according to a new study by researchers from the University of Texas and the University of Utah. The study evaluated transportation costs for more than 18,000 households that receive HUD rental subsidies, estimating that nearly half of recipients have to spend more than 15 percent of their household budgets on transportation.

A big part of reducing car traffic involves using cars more efficiently. Ride-hailing services like Uber and Lyft are supposedly assisting in this transition by making car ownership less necessary. But even though both companies operate carpool-type services, most of their business still comes from single passenger trips.