Remodelled cars feature interior effects including functional speedometers, fuel gauges and dashboard handbrake lights. Many modern motorcycles are now equipped with digital speedometers, most often these are sports bikes. Some vehicles were fitted with speedometers, an invention of Moses Ricardo. This means there are no legally accurate speedometers for these older vehicles. For 1995, all Trans Ams received 155-mph speedometers and Z-rated tires. Speedometers for other vehicles have specific names and use other means of sensing speed. Speedometers were made compulsory for new cars in 1937. Their speedometers were used in the Ford Model T. Buses were not necessarily fitted with Speedometers at this stage. Most digital speedometers have had green numbers displayed on a dark green or black background. Speedometers read up to , and added kilometers per hour. Some of the class had speedometers fitted. Speedometers were also installed on existing and new rolling stock. Speedometers had larger, easier-to-read graphics.