HLDI Research Shows Differences Between ADAS Results Based On the Auto Glass Used

With Advanced Driver Assistance Systems (ADAS) rising in consumer popularity, several tests have been performed to prove its value over the years. The Highway Loss Data Institute (HLDI), has been conducting its own studies and has recently published its results. One common conclusion from adding these types of systems to vehicles is the increase in repair costs, according to the report. HLDI results showed the most significant replacement cost is found in the vehicle’s windshield.

“Historically, replacing a windshield did not require any special consideration other than fit and clarity. Now that lidar and camera systems are becoming more common, replacing windshields requires additional consideration beyond aesthetics,” Sean O’Malley, Insurance Institute for Highway Safety senior test coordinator, said.

It’s no surprise that the more work that needs to be done on a customer’s windshield, increases the amount of work for you and your auto technicians. At this point there have not been test results proving that ADAS equipment mounted behind the windshield is affected when the vehicle’s glass is replaced, according to O’Malley’s research.

HLDI examined both original equipment manufacturer (OEM) and aftermarket auto glass for windshield replacements. Its goal was to see if the type of auto glass impacted the overall outcome, quality and performance.

“Initial evaluations of the constituent glass properties across the windshield types [original equipment manufactured and aftermarket] showed no distinct variation in clarity or refraction,” a section from the HLDI report reads.

In fact, when the automatic emergency braking (AEB) and lane departure warning (LDW) systems were tested, the results showed minor differences when comparing OE and aftermarket glass, according to HLDI’s results. Based off of the study, the only exception was the Honda Civic.

“In the case of the Civic … the most significant [exception] was the aftermarket windshield’s glued-on camera mount, which was skewed at an approximate 1° roll angle relative to the vehicle centerline,” according to the report.

During the examinations, HLDI found when the aftermarket windshield was installed and the camera was centered, both lane departure warning and AEB had a lowered performance.

HLDI concluded, out of the examined models, there was no evidence in its report that suggests the glass itself causes any conflict with ADAS operations. However, the Civic results suggest that calibrations must be performed to ensure proper function, according to the report.

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2 Responses to HLDI Research Shows Differences Between ADAS Results Based On the Auto Glass Used

  1. Does this article indicate that the only W/S requiring re-calibration is the Honda Civic? That means all other W/S only need to have the camera centered on the W/S and does not need to be re-calibrated?

  2. Pingback: HLDI Research Shows Differences Between ADAS Results Based On the Auto Glass Used | Auto Glass Safety Council™

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