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California Test 387 Quiz

Test your knowledge on the operation, calibration, and certification of inertial profilers as per California Test 387.

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14 questions
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Materials Lab
Materials Lab
Published April 16, 2026

Quiz Questions & Answers

Review every prompt, the correct responses, and helpful context to prep for your own run-through.

Question 1: What is the primary purpose of California Test 387?

To assess road surface materials

To classify soil types for construction

To ensure accurate operation of inertial profilers

To evaluate traffic flow on highways

Question 2: Which component is crucial for the calibration of inertial profilers?

Accelerometer

GPS Receiver

Camera

Laser Scanner

Question 3: What does the inertial profiler measure?

Surface roughness

Traffic density

Road texture

Pavement color

Question 4: In the context of California Test 387, what does 'operator certification' ensure?

The operator can repair the equipment

The operator understands data interpretation

The operator can drive the profiler

The operator is trained in proper calibration procedures

Question 5: Why is it important to regularly calibrate inertial profilers?

To reduce maintenance costs

To enhance the speed of data collection

To ensure accuracy of measurements over time

To improve battery life

Question 6: What type of data does an inertial profiler primarily collect?

Pavement surface profile data

Weather data

Traffic speed data

Geographical data

Question 7: What is a common consequence of improper calibration of an inertial profiler?

Inaccurate pavement condition assessments

Increased fuel consumption

Higher operational costs

Reduced operator efficiency

Question 8: Which of the following is NOT a method for calibrating inertial profilers?

Adjusting based on operator feedback

Utilizing standardized procedures

Conducting periodic tests

Using a known reference surface

Question 9: What is one of the key responsibilities of an operator certified under California Test 387?

Managing traffic during testing

Performing software updates

Designing road construction plans

Conducting routine equipment checks

Question 10: What does the inertial profiler detect that is critical for road safety?

Pothole sizes

Surface cracks

Roughness and irregularities

Color fading

Question 11: Which aspect of the inertial profiler is directly impacted by the calibration process?

Data accuracy

User interface

Weight of the equipment

Battery performance

Question 12: What should be done if an inertial profiler shows inconsistent results?

Change the operator

Recalibrate the profiler

Ignore the results

Increase the speed of operation

Question 13: What is the significance of using standardized procedures in California Test 387?

To limit the number of operators

To speed up the calibration process

To reduce operational costs

To ensure uniformity in testing

Question 14: Which of the following is a benefit of operating an inertial profiler correctly?

Lower initial costs

Enhanced data quality

Faster data processing

Longer equipment lifespan