Metro station (Robert Thomson/The Washington Post)

Metro’s service interruptions — like the one that shut down parts of the Red Line between the Fort Totten and NoMa-Gallaudet stations — can often catch riders off guard even in the days of smartphones.

A recent Washington Post poll found that more than half of commuters – 57 percent – don’t look for information about their commute before they leave the house. Those who do tend to get their information from the radio (40 percent of respondents) or television (30 percent of respondents). That may explain why some commuters were not aware that Metro officials had closed that section of track Friday morning.

Even with the convenience of smartphones, slightly more than half of those surveyed, 52 percent, said they do not check apps to monitor their commute.