Lane Departure Alert (LDA) alerts you if you start to drift out of your lane when visible white/yellow lane markings are detected.
TSS-P - Lane Departure Alert with Steering Assist
In addition to LDA, some models with TSS-P may include the Steering Assist function and may also provide small corrective steering inputs.
TSS 2.0 - Lane Departure Alert with Steering Assist and Road Edge Detection
LDA for TSS 2.0 alerts you if you start to drift out of your lane when visible white/yellow lane markings, as well as road edges or curbs at certain speeds, are detected. Steering Assist may also provide gentle corrective steering inputs if action is not taken.