How can you check your brake lights if you are alone?

The correct method to check your brake lights when you are alone is to reverse towards a window and look at the reflection. This technique is effective because it allows you to see the lights without needing anyone else to assist you. By positioning your vehicle so that you can monitor the reflection of the brake lights in a window, you can confirm that they are functioning properly when you press the brake pedal.

Using a passerby to check the brake lights requires someone else, which is not feasible if you're without help. Checking the dashboard after turning on the ignition will typically provide information about fluid levels and warning lights but does not show the condition of the brake lights themselves. Lastly, looking in the rearview mirror gives a limited perspective and does not effectively indicate whether the brake lights are illuminated as they will not be visible from that angle while the car is in motion. This makes the reflection technique the most practical and reliable choice for an individual checking their brake lights alone.