Driving behaviour in a real and a simulated road tunnel—a validation study

Törnros, Jan · 1998 · OpenAlex-citations

DOI: 10.1016/s0001-4575(97)00099-7

archive: archived pipeline: cataloged verified

Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)

Summary

This study validates the behavioral validity of the VTI driving simulator by comparing driving performance in a real road tunnel against its simulated counterpart. The research was motivated by the need to ensure that simulators used for road-tunnel design planning accurately reflect real-world driver behavior. The study distinguishes between absolute validity (numerical correspondence of behavior) and relative validity (consistency of effects from experimental manipulations), noting that relative validity is critical for research utility. The experiment involved 20 licensed drivers who performed driving sessions in both the real Ekeberg tunnel in Oslo and the VTI simulator. The simulator replicated the tunnel’s geometry, lighting, and slope, though it lacked lateral slant simulation and longitudinal force feedback to prevent motion sickness. Using a repeated-measures design, participants drove a left-hand-steered, manually geared SAAB 9000 in three lanes under conditions with and without speedometer information. Data on speed and lateral position were collected and analyzed using analysis of variance. Results indicated that absolute validity was unsatisfactory, particularly regarding speed. Drivers traveled significantly faster in the simulated tunnel (8.6 km/h higher) than in the real tunnel. Similarly, lateral positioning differed, with drivers keeping a greater distance from the nearest wall in the real tunnel (13 cm difference on straight sections). However, relative validity was strong. The effects of removing speedometer information and changing driving lanes were statistically similar in both environments. For instance, removing speed information increased speed by similar amounts in both settings, and drivers slowed down in the right exit lane in both cases. Regarding lateral position, the tendency to keep further from a wall on the driver’s left side was consistent across both real and simulated conditions, although lateral deviation was slightly greater in the simulator during curves. Test-retest reliability was high in the real tunnel but lower in the simulator. The study concludes that while the simulator does not perfectly replicate absolute driving metrics, it possesses good relative validity. This suggests the simulator is a valid tool for studying the effects of independent variables on driving behavior, despite discrepancies in baseline speed and lateral positioning. The authors attribute the speed discrepancy to factors such as the powerful engine in the test car, lack of longitudinal force simulation, and potential order effects where drivers sped up in the simulator to conclude the session.

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed.

Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified_with_issues.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• simulator validity fidelity
• simulator training transfer
• simulator sickness
• work zones
• lane positioning

Information type

What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).

• Methodological Resource: validation psychometrics, tool software
• Theoretical Contribution: computational model