The Federal Aviation Administration (FAA) on Wednesday said it is sending $121 million to U.S. airports for infrastructure projects that will help reduce the risk of runway incursions.

The FAA considers any incorrect presence of a person, vehicle or aircraft within areas designated for aircraft landing or takeoff. The agency’s four categories of incursions range from minor incidents with no serious safety concerns to more serious, near-collision events.

So far in the FAA’s Fiscal Year 2023, the agency has logged a total of almost 1,500 incursions.

Projects covered by this latest FAA funding round include those that will see the reconfiguration of potentially confusing taxiways, installation of new lighting systems and other measures that promote safe airport and airfield movement.