But as simple as the questions seem—Is there wheelchair-accessible seating? or Is there a wheelchair-accessible elevator?—answering them requires careful attention to detail. That’s why Google even sent out a  nifty tip sheet to help its physically abled members answer those questions.

“It’s thinking beyond that just because there’s an elevator, it’s accessible,” says Becky Curran, a disability rights advocate and a local guide who contributes frequently. “And yes, there may be a ramp, but maybe the doorway isn’t wide enough for a wheelchair to get through.” Curran recalls her old apartment building, which had an elevator inside, but also narrow doorways and two steps at the entrance.

The good thing is that the community has already been thinking about mobility issues. Not too long ago, a group in New York held a meet up to do an accessibility check on New York City’s subway. And the last time Curran organized a scavenger hunt in the city, she and her team were careful to only include locations where the subway was wheelchair accessible.

“One of the biggest things for the disability community is that they want to know that people are there when help is needed,” Curran says, “but everyone wants to try [doing it themselves] before asking for that help.”

On the one hand, Bradley praises other groups for trying to fill in the gap with their own app. But she says she specifically targeted her petition at Google Maps because of the kind reach the company has. “Google has a much wider data [than others], and it’s the number one [navigation] app,” she says, adding that to her, that was a form of discrimination. “We shouldn’t have to be forced into using a separate app.”

Slabin says Google has been addressing accessibility since at least 2010. But this time, the company is “moving more aggressively” as the data becomes more detailed and as their 2-year-old Local Guides program continues to grow. “We’re at a scale where we can have a larger impact,” she tells CityLab, adding that mobility challenges are only the beginning of what they hope to tackle in the near future.