
practice phase, this was activated through visual and
auditory inputs from the road environment and in-
structor cues, resulting in motor outputs. Therefore,
semantic knowledge must be easy to activate and ap-
plicable during practice. To evaluate this condition,
the procedural instruction was assessed using Cog-
nitive Load Theory (Sweller, 1988), which catego-
rizes cognitive demands into intrinsic load (task com-
plexity), extraneous load (unnecessary elements in the
learning environment), and germane load (elements
that facilitate learning). According to this theory, by
excluding additional information—such as explana-
tions of why certain actions are necessary—and fo-
cusing solely on procedural execution, learners can
concentrate on the steps themselves, reducing task
complexity and minimizing intrinsic load. This ap-
proach ensures that the provided semantic knowledge
meets the condition of being easy to activate and di-
rectly applicable to motor outputs during practice.
During the practice phase, providing only key-
words representing each step likely served, as shown
in Figure 7(b), to trigger learners’ procedural memory
through external stimuli. This approach is considered
effective for tasks like lane changes, where precise ac-
tions must be performed within a short time, as it fa-
cilitates the rapid transformation of activated memory
into motor outputs. Furthermore, since the capacity
of Working Memory is limited, supporting the acti-
vation of already provided information without intro-
ducing new elements likely plays a role in reducing
extraneous load.
Finally, regarding feedback, verbalizing proce-
dural steps has been shown to generally enhance
the accuracy and speed of subsequent motor actions
(Guadagnoli et al., 1992). Additionally, repeating the
steps in a stationary state allows learners to review
them in a low cognitive load environment, facilitating
their transformation into procedural memory in ad-
vance. Therefore, by ensuring that learners accurately
recognize their mistakes and rehearse the steps in a
stationary vehicle, it is believed that they retain ver-
balized semantic knowledge that is easily converted
into procedural memory, alongside procedural mem-
ory developed in a stationary state. This preparation
aids in performing high-speed lane changes in subse-
quent practice.
In summary, pre-learning instruction provided
learners with semantic knowledge that could be effec-
tively transformed into procedural memory. During
practice and feedback, the instruction focused on aid-
ing this transformation, facilitating skill acquisition.
4.2.2 Formalizing Instructional Content Based
on Learner Drivers’ Behavior
Based on the previous section and as described in Sec-
tion 3.3.1, this discussion examines the factors that
led to omissions in procedural execution during prac-
tice, despite learners retaining information about the
procedures. Lane changes require quick execution of
steps at vehicle speeds of 10–20 km/h, and in this ex-
periment, the lack of support for activating semantic
knowledge during practice likely resulted in delayed
activation. In contrast, feedback involving verbaliza-
tion of the steps and repetition in a stationary vehi-
cle likely facilitated the transformation into procedu-
ral memory. These findings suggest that for skills re-
quiring procedural execution at higher speeds, retain-
ing procedures as semantic knowledge alone is insuf-
ficient; verbalized guidance and repetition in a sta-
tionary environment are effective.
Additionally, the low number of participants who
improved procedural accuracy with increased practice
is discussed. Unlike tasks such as avoiding wheel-
drops in an S-curve, lane changes lack easily recog-
nizable error indicators, and participants may have
mistakenly believed they executed the steps correctly
without adjusting their behavior. This limitation, due
to the lack of feedback, highlights the necessity of
providing feedback for procedural improvement.
4.3 S-Curve Navigation
4.3.1 Analysis of S-Curve Navigation Instruction
Similar to the lane change instruction, the instruc-
tional content for S-curve navigation is summarized
as follows: During the pre-learning phase, as shown
in Figure 4, instructors emphasized the importance of
low-speed control using the brakes before teaching
the specific steps for navigating the S-curve.
During the practice phase, instruction varied
based on learner performance. For learners driv-
ing at excessive speed, instructors focused solely on
speed control using the brakes. For those maintain-
ing an appropriate speed, instructors provided addi-
tional guidance, such as encouraging them to look
further ahead along the curve to guide their visual be-
havior. For learners who started steering too early in
left curves, instructors avoided direct intervention, in-
stead prompting them to consider whether the front-
right wheel was aligned with the outer edge of the
curve, helping them recognize their steering errors.
In the feedback phase, instructors emphasized the
importance of speed control for learners who drove
too fast, explaining that excessive speed limited their
ability to predict vehicle positioning. They also
Formalization of Pre-Learning Instructional Method Based on Information Processing of Learner Driver
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