They're among the busiest bus routes in Manhattan, shuttling more than 70,000 riders across town every weekday.

But riders at 15 stops along the westbound M66, M79, M86 and M96 will soon have one more way of finding out just where that next bus is.

The real-time bus signs are thanks to a city-funded measure pushed by an Upper East Side councilman in the city's latest round of Participatory Budgeting.

They're also coming to the southbound M31 on York Avenue.

"People from all over the district voted for bus clocks. It was something that they wanted and there was a need for,” said Councilman Ben Kallos.