After searching eBay, [j3tstream] found an inexpensive 3.2″ TFT LCD touchscreen display that would work nicely for displaying the traffic data. The display was easy to get working with the Pi.

AG Neovo Launches HX-24 for security-critical and broadcasting environments AG Neovo TX-W32 - Advanced optical touch technology in a 32” AG Neovo hard glass display designed with the durability and ...

AG Neovo TX-15 is a 15inch 10-point touch TFT LCD CCTV monitor with front-sided IP65 designed specifically for professional interactive applications. Built on durable metal housing and rugged base ...