1. An arrangement for obtaining information about objects in an environment around a vehicle, comprising: light emitting means arranged on the vehicle for emitting infrared light into the environment around the vehicle; receiver means arranged on the vehicle for receiving infrared light from the environment around the vehicle; and measurement means coupled to said light emitting means and said receiver means for measuring time between emission of the infrared light by said light emitting means and reception of the infrared light by said receiver means whereby the measured time correlates to distance between the vehicle and an object from which the infrared light is reflected.