Engineers in the automotive industry face new challenges with infotainment systems, which now introduce additional I/O like audio, video, and RF signals into systems that already have vehicle network communications and other sensor measurements. The NI PXI platform combines all measurements into one chassis to simplify this test. Head units give the user control over the vehicle's entertainment media: AM/FM radio, satellite radio, CDs, cassette tapes (although these are now uncommon), MP3, GPS navigation, Bluetooth, etc. Many audio-only head units afford the user precise control over detailed audio functions such as volume, band, frequency, speaker balance, speaker fade, bass, treble, EQ and so on.
The test vehicle technique has been used for travel time data collection since the late 1920s.
Traditionally, this technique has involved the use of a data collection vehicle within which an observer records cumulative travel time at predefined checkpoints along a travel route. This information is then converted to travel time, speed, and delay for each segment along the survey route. There are several different methods for performing this type of data collection, depending upon the instrumentation used in the vehicle and the driving instructions given to the driver. Testing includes GPS system, Media devices ,Tuner & Radio systems, Voice recognition. Test parameters are discussed with the company and are set prior to the testing phase. In-Vehicle Infotainment systems are currently available in select automobiles from manufacturers like Ford (SYNC and MyFord Touch), Toyota (Entune), Kia Motors (UVO), Cadillac (CUE) and Fiat (Blue&Me). IVI systems frequently utilize Bluetooth technology and/or smartphones to help drivers control the system with voice commands, touchscreen input, or physical controls.