The British automotive firm has added the technology on autonomous pods developed by Aurrigo for the UK Autodrive project in order to give people a better idea of what the vehicle intends to do.
Bright bars are projected from the front of the pod, with the spaces between the bars widening when it moves off or accelerates, and shortening when preparing to brake.
Should the pod need to turn left or right, the bars curve towards the relevant direction.
Engineers have been testing the system on a fabricated street scene at a facility in Coventry.
“The trials are about understanding how much information a self-driving vehicle should share with a pedestrian to gain their trust,” said Pete Bennett, Jaguar Land Rover’s future mobility research manager.
“Just like any new technology, humans have to learn to trust it, and when it comes to autonomous vehicles, pedestrians must have confidence they can cross the road safely.
“This pioneering research is forming the basis of ongoing development into how self-driving cars will interact with people in the future.”
Last year, the pods were given virtual eyes, with the similar aim of improving the public’s trust in self-driving vehicles.
The development comes weeks after Jaguar Land Rover announced it would cut 4,500 jobs under plans to make £2.5 billion of cost savings, with many of the job losses expected to be in the UK.