In our country, the subway system is growing quite a bit. In the major cities, they're extending the lines they already have. This means they're building new stations in parts of the city that didn't have access before. It's really good because it helps with the traffic problems and makes the air cleaner since fewer people need to use cars.

Our subway systems are also getting modernized. They're upgrading the old trains to make them more efficient and putting in new systems for buying tickets digitally, which is much faster. They're also making the stations and trains safer and easier for everyone to use, including people with disabilities.

Another development is how the subway lines are being connected with other types of public transport. This makes it easier for people to switch from one mode of transport to another, like from a bus to a subway. They're building these big transport hubs where you can catch a train, bus, or even rent a bike.

Also, there's a big push to make the subway system more environmentally friendly. They're bringing in trains that use less energy and trying to use more renewable energy in the operations of the subway. This should help reduce the overall carbon emissions from public transport.