Usability of TeleFOT Nomadic and Aftermarket Devices [D1.8]

This deliverable reports on the Usability activities undertaken in TeleFOT mainly within WPs 4.8 and 4.10. These planned to support the Sub-Project 4 of TeleFOT in Evaluation and Assessment of nomadic devices within the national Field Operational Tests (FOTs). The key objective of WP4.8 in this regard is to provide measurable data that allows comparing usability and user experience of different driver assistance services whilst the key objective of WP4.10 is to identify and define the target and actual technical performance metrics for the Nomadic Devices (NDs) used. Two approaches are described in this Deliverable which have been utilised within TeleFOT for evaluating the usability of the nomadic and aftermarket devices tested within the TeleFOT FOTs. The first approach describes the feedback received from the TeleFOT participants with regard to their user experiences with the devices tested during the FOTs. To complement this information, each test site was asked to supply usability information specifically related to the time taken and the number of user interactions (aka button presses) to access certain functions within their ND. These included time and interactions to access the main menu and primary function, or adjust the volume, as well as to start up and shut down. The participants’ opinions on the design of the device, user interface, initial reactions and benefits to the NDs were then recorded as were ‘Other Issues’ which related to participants’ perceived usefulness, reliability and ease to interpret the information offered by the ND. This method allowed in-depth information to be captured surrounding issues which may have influenced the use of the ND during the FOT and/or common issues which arose. The second approach involved expert evaluations undertaken by HMI analysts working at the test-sites on a number of devices that were tested within TeleFOT. Not all of the devices that were tested within TeleFOT were subjected to expert evaluations. However, the procedure for such evaluations is described along with the results

Patterns of use, perceived benefits and reported effects of access to navigation support systems: an inter-European field operational test

The study presents findings regarding drivers’ patterns of use, attitude towards, and reported effects of access to mature nomadic navigation support systems. Three different systems were tested by 582 drivers in four-field operational tests for a period of six months. A majority of the participants used the support system for trips where the route/destination was unfamiliar but there were also other use scenarios. The main benefits entailed convenience and comfort. Reported effects involved increased possibilities to choose the route according to preferences; a decrease in the time it took to reach destinations and in the distance covered to reach the destination. One in four reported a decrease in fuel consumption attributed an increased compliance with speed limits and/or that driving around and searching for the correct route to reach the desired destination could be avoided. A majority reported ‘no change’ regarding the number of journeys made by car. Reported effects (whether increases or decreases) were however smaller than expected before the trial

Impacts on safety - results and implications: TeleFOT [Field Operational Tests of Aftermarket and Nomadic Devices in Vehicles]. D4.4.3 Vol 0.4

This deliverable presents the full and final analysis results in relation to the safety impact assessment. It then draws upon these results to discuss the impact that the functions provided by Nomadic Devices have upon safety. The deliverable is structured so as to present the key results for each Research Question (RQ) and Hypothesis within the main body of the report. These main results are then restructured on a function basis in order to assess the impact of each function upon; • Route Choice • Distance Travelled • Distraction • Speed • Lane positioning • Braking behaviour • Manual activity Further supporting analysis for each RQ is provided in Annex 1. Subsequently, an evaluation is made relating any impacts observed to consequences for safety. This evaluation is made using results that refer to singular functions; results from Field operational tests (FOT) that evaluated bundles of functions are included within the results sections for each Research Question but not included within the evaluation. This is since there are no current rigorous methods accepted within the research community for dealing with bundles of functions; this is being discussed and considered within the revision of the FESTA handbook

TeleFOT: field operational tests of aftermarket and nomadic devices in vehicles. D 4.3.3, Impacts on safety: results and implications

This deliverable presents the full and final analysis results in relation to the safety impact assessment. It then draws upon these results to discuss the impact that the functions provided by Nomadic Devices have upon safety. [Continues.