Please choose the correct ending to complete the given sentence: Health: [header] How to drive if you are colorblind [title] Memorize the order of the traffic lights. [step] The primary difficultly of driving a car when colorblind is dealing with traffic lights. Red-green colorblindness is the most common form, and as such, many colorblind individuals cannot distinguish between these two traffic lights.

Ending1: [substeps] Drivers in high traffic conditions are more likely to end up near the traffic lights, and this is because there is less flash coming from there. Though the lights not only signals traffic, they vary in quality of form and intensity. Ending2: [substeps] When trying to drive a car on the side of a road, it may look like two brightly-colored cones coming out of the parking lot, when in fact they are parked in a single lane. In this case, the two traffic lights are different. Ending3: [substeps] Most red and white lights are usually positioned so that they reflect off the highway, not onto the road itself. If there is no color one shade lighter than the other, this could mean that your visibility is impaired. Ending4: In order to adapt, you must memorize the order in which the traffic lights appear. [substeps] Red (stop) is always positioned at the top.

Answer format: ending1/ending2/ending3/ending4