Light trails are an ever-popular photographic treat. The long, flowing streams of illumination can add some serious flair to just about any night scene, particularly night scenes shot in busy, high traffic areas. Even better, light trail images are easy to create. All you need is a camera with manual controls, a tripod (or some other way to stabilize your camera), and a little knowledge of how to manipulate shutter speed to your advantage. In addition to being fun to look at, I have a strong feeling that the images below will inspire you to go out one night and try some light trail photography of your own.
Night Tram by Pavel P., on Flickr/a>
Fast Lane by Neil Kremer, on Flickr