The company SICK provides a variety of laser scanners that can be used indoor or outdoor. The SICK Laser Measurement System (LMS) 5xx and 1xx models are commonly used in autonomous cars for obstacle detection. They provide a scanning range of 180 degrees and have high-resolution laser data. The list of SICK laser scanners available on the market can be found at https://www.sick.com/in/en. Check out the following example:
Mobile robot with a SICK laser (source: https://commons.wikimedia.org/wiki/File:LIDAR_equipped_mobile_robot.jpg)
Another company, called Hokuyo, also builds laser scanners for autonomous vehicles. Here is the link to a list of laser scanners provided by Hokuyo: http://www.hokuyo-aut.jp/02sensor/.
Some of the other LIDARs used in the DARPA Challenge are given here:
Let's now look at the continental ARS 300 radar (ARS).