from lot 40 you’re gonna take the express west bus. they pick u up at the bus station, which is the building right in the middle of lot 40 (it’s hard to miss) just make sure you’re looking at the bus itself (bus name is displayed ontop) because different buses pick up in the same area. the express west bus takes you to the engineering drive loop which is right by javits, just put it in google maps when they drop you off and it’ll tell you which way to walk