Estimating Compliance with the 15-Second Rule for Driver-Interface Usability and Safety

Abstract

This paper describes SAE J2365 (Recommended Practice for Calculating the Time to Complete In-Vehicle Navigation and Route Guidance Tasks), a draft procedure to estimate if the requirements of SAE J2364 (Navigation Function Access) are met. Application of these practices will enhance the safety, ease of use, and customer convenience of driver interfaces. SAE J2364 specifies that drivers should not be allowed to perform navigation-system tasks in a moving vehicle that take more than 15 seconds to complete when measured staticly. Tasks are defined to start when the driver's hands begin to move from the steering wheel and end when feedback from the final-switch actuation is processed.

The 11-step calculation procedure of J2365 involves determining exactly how each task (e.g., destination entry) is carried out, developing a pseudo-code description of the goals and methods used, determining the associated elemental tasks, and adding up the task times. Elemental times [reaching for a device, keying (cursor, letter, space, enter), mental activity, searching, etc.] were derived from the Keystroke-Level Model (Card, Moran, and Newell, 1983) in the human-computer interaction literature, specific automotive studies of navigation data entry (Manes, Green, and Hunter, 1998), and MTM-1 (Barnes, 1968).

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References

Barnes

R. M.

(1968). Motion and Time Study (6th ed.), New York: Wiley.

Brooks

Green

(1998). Map Design: A Simulator Evaluation of the Time to Read Electronic Navigation Displays (Technical Report UMTRI-98-7), Ann Arbor, MI: University of Michigan Transportation Research Institute.

Brooks

Lenneman

George-Maletta

Hunter

D. R.

Green

(1999). Preliminary Examinations of the Time to Read Electronic Maps: The Effects of Text and Graphic Characteristics (Technical Report UMTRI-98-36), Ann Arbor, MI: University of Michigan Transportation Research Institute.

Card

S. K.

Moran

T. P.

Newell

(1980). The Keystroke-Level Model for User Performance Time with Interactive Systems, Communications of the ACM, July, 23 (7), 396–410.

Card

S. K.

Moran

T. P.

Newell

(1983). The Psychology of Human-Computer Interaction, Hillsdale, NJ: Lawrence Erlbaum Associates.

Goodman

Bents

F. D.

Tijerina

Wierwille

Lerner

Benel

(1997). An Investigation of the Safety Implications of Wireless Communications in Vehicles (Technical Report DOT HS 808 635), Washington, D.C.: U.S. Department of Transportation, National Highway Traffic Safety Administration.

Green

(1999a). The 15-Second Rule for Driver Information Systems, Proceedings of the ITS America Ninth Annual Meeting, Washington, D.C.: Intelligent Transportation Society of America, CD-ROM.

Green

(1999b). Navigation System Data Entry: Estimation of Task Times (Technical Report UMTRI-99-17), Ann Arbor, MI, University of Michigan Transportation Research Institute.

Green

(1999c). Visual and Task Demands of Driver Information Systems (Technical Report UMTRI-98-16), Ann Arbor, MI: University of Michigan Transportation Research Institute.

10.

Kieras

D. E.

(1997). A Guide to GOMS Model Usability Evaluation Using NGOMSL. In Helander

Landauer

Prabhu

, Handbook of Human-Computer Interaction (2nd ed.). Amsterdam: North-Holland, 733–766.

11.

Manes

Green

Hunter

(1998). Prediction of Destination Entry and Retrieval Times Using Keystroke-Level Models (Technical Report UMTRI-96-37, also released as EECS-ITS LAB FT97-077), Ann Arbor, MI: University of Michigan Transportation Research Institute.

12.

Namba

(1980). The Amount of Information in a Still-Picture and the Display Time Required (NHK Laboratories Note Serial # 248), Tokyo, Japan: NHK Technical Research Laboratories.

13.

Nowakowski

Green

(1998). Map Design: An On-the-Road Evaluation of the Time to Read Electronic Navigation Displays (Technical Report UMTRI-98-4), Ann Arbor, MI: University of Michigan Transportation Research Institute.

14.

Olson

J. R.

Nilsen

(1987-1988). Analysis of the Cognition Involved in Spreadsheet Software Interaction, Human-Computer Interaction, 3, 309–349.

15.

Society of Automotive Engineers (1999). SAE Recommended Practice for Navigation and Route Guidance Function Accessibility While Driving (SAE J2364), Committee Draft of June 8, Warrendale, PA: Society of Automotive Engineers.

16.

Society of Automotive Engineers (1998). SAE Recommended Practice for Calculating the Time to Complete In-Vehicle Navigation and Route Guidance Tasks (SAE J2365), Committee Draft of November 23, Warrendale, PA: Society of Automotive Engineers.

17.

Steinfeld

Manes

Green

Hunter

(1996). Destination Entry and Retrieval with the Ali-Scout Navigation System (Technical Report UMTRI-96-30, also released as EECS-ITS LAB FT97-077), Ann Arbor, MI: University of Michigan Transportation Research Institute.

18.

Tijerina

Parmer

Goodman

M. J.

(1998). Driver Workload Assessment of Route Guidance System Destination Entry While Driving: A Test Track Study, Proceedings of the 5th ITS World Congress, Berlin, Germany: VERTIS, CD-ROM.

19.

Wierwille

W. W.

(1995). Development of an Initial Model Relating Driver In-Vehicle Visual Demands to Accident Rate, Third Annual Mid-Atlantic Human Factors Conference Proceedings, Blacksburg, VA: Virginia Polytechnic Institute and State University.