Efficacy of Haptic Pedal Feel Compensation on Driving with Regenerative Braking

TL;DR

This study evaluates how haptic pedal feel compensation affects driving safety and performance during regenerative braking, showing it reduces hard braking and is preferred by drivers in simulated vehicle tasks.

Contribution

It demonstrates the effectiveness of pedal feel compensation in enhancing safety and driver preference during regenerative braking in both two-pedal and one-pedal driving scenarios.

Findings

Pedal feel compensation reduces hard braking instances.

Drivers prefer pedal feel compensation during regenerative braking.

The benefits of compensation are greater in two-pedal cooperative braking.

Abstract

We study the efficacy of haptic pedal feel compensation on driving safety and performance during regenerative braking. In particular, we evaluate the effectiveness of the preservation of the natural brake pedal feel under two-pedal cooperative braking and one-pedal driving scenarios, through human subject experiments in a simulated vehicle pursuit task. The experimental results indicate that pedal feel compensation can significantly decrease the hard braking instances, improving safety for both two-pedal cooperative braking and one-pedal driving. Volunteers also strongly prefer compensation, while they equally prefer and can effectively utilize both two-pedal and one-pedal driving conditions. Furthermore, the beneficial effects of haptic pedal feel compensation is larger for the two-pedal cooperative braking case.