You’ll also need a tripod or a firm rest for making your camera completely still as you’ll be shooting with long shutter speeds. You also use a lens hood to help block lens flare from ambient lights. Scout around to find a spot where you’ll see the light trails created by cars.
The advantages of digital cameras is that you can scout around and experiment with no extra cost with instant results to add a little more thought into choosing your location, thinking about timing and framing your image.
Shoot at shutter speeds between from a few seconds to 20 seconds making cars to move through the frame and with apertures in the mid range starting with something around f/8.