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National Highway Traffic Safety Administration (NHTSA), Department of Transportation (DOT).
Receipt of petition.
Toyota Motor Engineering & Manufacturing North America, Inc., on behalf of Toyota Motor Corporation and certain other specified Toyota manufacturing entities (collectively referred to as “Toyota”), has determined that certain model year (MY) 2016-2017 Lexus RX350 and Lexus RX450H motor vehicles do not fully comply with Federal Motor Vehicle Safety Standard (FMVSS) No. 202a, Head Restraints. Toyota filed a noncompliance information report dated November 29, 2016. Toyota also petitioned NHTSA on December 21, 2016, for a decision that the subject noncompliance is inconsequential as it relates to motor vehicle safety.
The closing date for comments on the petition is May 8, 2017.
Interested persons are invited to submit written data, views, and arguments on this petition. Comments must refer to the docket and notice number cited in the title of this notice and submitted by any of the following methods:
- Mail: Send comments by mail addressed to U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.
- Hand Delivery: Deliver comments by hand to U.S. Department of Start Printed Page 17080Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. The Docket Section is open on weekdays from 10 a.m. to 5 p.m. except Federal Holidays.
- Electronically: Submit comments electronically by logging onto the Federal Docket Management System (FDMS) Web site at https://www.regulations.gov/. Follow the online instructions for submitting comments.
- Comments may also be faxed to (202) 493-2251.
Comments must be written in the English language, and be no greater than 15 pages in length, although there is no limit to the length of necessary attachments to the comments. If comments are submitted in hard copy form, please ensure that two copies are provided. If you wish to receive confirmation that comments you have submitted by mail were received, please enclose a stamped, self-addressed postcard with the comments. Note that all comments received will be posted without change to https://www.regulations.gov, including any personal information provided.
All comments and supporting materials received before the close of business on the closing date indicated above will be filed in the docket and will be considered. All comments and supporting materials received after the closing date will also be filed and will be considered to the fullest extent possible.
When the petition is granted or denied, notice of the decision will also be published in the Federal Register pursuant to the authority indicated at the end of this notice.
All comments, background documentation, and supporting materials submitted to the docket may be viewed by anyone at the address and times given above. The documents may also be viewed on the Internet at https://www.regulations.gov by following the online instructions for accessing the dockets. The docket ID number for this petition is shown in the heading of this notice.
DOT's complete Privacy Act Statement is available for review in a Federal Register notice published on April 11, 2000, (65 FR 19477-78).End Preamble Start Supplemental Information
I. Overview: Toyota Motor Engineering & Manufacturing North America, Inc. (Toyota), has determined that certain model year (MY) 2016-2017 Lexus RX350 and RX450H motor vehicles do not fully comply with paragraph S4.5 of Federal Motor Vehicle Safety Standard (FMVSS) No. 202a, Head Restraints. Toyota filed a noncompliance information report dated November 29, 2016, pursuant to 49 CFR part 573, Defect and Noncompliance Responsibility and Reports. Toyota also petitioned NHTSA on December 21, 2016, pursuant to 49 U.S.C. 30118(d) and 30120(h) and 49 CFR part 556, for an exemption from the notification and remedy requirements of 49 U.S.C. Chapter 301 on the basis that this noncompliance is inconsequential as it relates to motor vehicle safety.
This notice of receipt of Toyota's petition is published under 49 U.S.C. 30118 and 30120 and does not represent any agency decision or other exercise of judgment concerning the merits of the petition.
II. Vehicles Involved: Approximately 120,748 MY 2016-2017 Lexus RX350 and Lexus RX450H motor vehicles manufactured between September 28, 2016, and November 23, 2016, are potentially involved.
III. Noncompliance: Toyota explains that the noncompliance is that when adjusting the rear seat outboard head restraints in the subject vehicles from the first adjustment position to the second, the lock release button must be depressed while the head restraint is being pulled upward. Since this is the same action that is required to remove the head restraint, the requirements of paragraph S4.5 of FMVSS No. 202a are not met.
IV. Rule Text: Paragraph S4.5 of FMVSS No. 202a states:
S4.5 Removability of head restraints. The head restraint must not be removable without a deliberate action distinct from any act necessary for upward adjustment . . .
V. Summary of Toyota's Petition: Toyota described the subject noncompliance and stated its belief that the noncompliance is inconsequential as it relates to motor vehicle safety.
In support of its petition, Toyota submitted the following reasoning:
1. The rear outboard head restraints continue to meet the underlying purpose of S4.5 of the standard:
a. Background of S4.5: Toyota referenced a notice of proposed rulemaking (NPRM) that NHTSA issued in 2001  to upgrade FMVSS No. 202 and stated that its principal focus was to improve performance of front and rear outboard head restraints to mitigate “whiplash” injuries, particularly in rear crashes. Toyota stated that the agency recognized that existing adjustable head restraints could be manually removed solely by hand, and not be replaced, thereby creating a greater risk of injury. As a result, the proposed rule stated that removable front seat head restraints would not be permitted, but that due to concerns with rear visibility, removable restraints in the rear would not be prohibited. Toyota stated that the draft rule did not contain any requirement comparable to the one set forth in paragraph S4.5 of FMVSS No. 202a.
Toyota further explained that when NHTSA issued the FMVSS No. 202 Final Rule in 2004, it made a variety of changes from the requirements proposed in the NPRM. One of those was to not require rear seat outboard head restraints, but to impose certain requirements on head restraints that were voluntarily installed. Toyota noted that most of the comments submitted on the NPRM favored removability of both front and rear seat head restraints solely by hand, although some supported a prohibition on removability at all positions, because a removed restraint might not be replaced or correctly reinstalled. Toyota stated that NHTSA ultimately decided to allow head restraint removability for both front and rear restraints, but for both front and rear optional head restraints, specified that removal must be by means of a deliberate action that is distinct from any act necessary for adjustment to ensure that head restraints are not accidentally removed when being adjusted, thereby reducing the likelihood of inadvertent head restraint removal and increasing the chances that vehicle occupants will receive the benefits of properly positioned head restraints. To implement this requirement, the agency added the text in paragraph S4.5. In 2007, the agency amended the standard by adding the word “upward” before “adjustment” to clarify the upward adjustment and removability aspects of the requirement.
b. The noncompliance is inconsequential because the rear outboard head restraints meet the underlying purpose of S4.5: Toyota stated that the rear seat head restraints in the subject vehicles allow manual adjustment by sliding the head restraint in and out of the seat back on stays attached to the head restraint. Position locking is achieved by two notches in one of the stays, allowing for a detent mechanism. Toyota stated that the posts go through plates on top of the seat back, one of which contains a button which is pressed to allow the restraint to be removed. To adjust the height of the head restraint from the fully stowed position on top of the seatback to the first notch on the stay, the restraint is simply pulled upward. To reach the Start Printed Page 17081second notch, the button must first be pressed to allow the restraint to be lifted; it then will lock in position. To remove the restraint, the button must again be pressed before lifting it out of the seatback. Because the button must be pressed to adjust the restraint from the first notch position to the second, and the same action is required to start the removal process, the restraint does not conform to paragraph S4.5 of FMVSS No. 202a.
Toyota stated that there are three factors, when considered together, that make this noncompliance inconsequential to motor vehicles safety:
i. With the subject head restraints, the necessity to press the release button to move from the first notch to the second, in addition to the need to press it to release the restraint from the second notch to remove it, lessens the ease of removal, thereby reducing the likelihood of inadvertent removal and increasing the chances that the occupant will receive the benefits of a properly positioned head restraint.
ii. The subject vehicle model can be generally described as a mid-sized sports-utility vehicle (SUV). The roofline tends to slope downward toward the rear of the vehicle, and the distance between the top of the head restraint and the headliner is less than in other mid-sized SUV's with a less sloped roofline. The rear seat can be manually adjusted forward and rearward on the seat track for a distance of 120mm from the front position to the rear position. The nominal design seat back position is approximately 27 degrees rearward to the vertical line, and the seat back can be reclined an additional 10 degrees. The seat back folds forward from the nominal design position. (See figure 6 of Toyota's petition).
Given the rear seat design, there are a variety of combinations of seat track and seat back positions that can be attained. Typically the seat would most likely be placed in the mid-track position or rearward for occupant comfort and convenience. From the mid-track position (60mm) rearward there are 30 combinations of seat track/seat back angle combinations for the manually reclining seat back. Of these combinations there are 25 where there would be some degree of interference between the top of the head restraint and the vehicle headliner if someone intended to remove it. To completely remove the restraint from the top of the seat in these 25 combinations, there must be a deliberate action to compress the soft material of the restraint, because it cannot be pulled directly out of the seatback. In some cases the seat back angle would have to be adjusted or the seat moved forward on the seat track before the restraint can be removed without headliner interference. (See figure 7 of Toyota's petition)
Together with the need to press the release button to move the head restraint when in either the first or second notches, such further deliberate actions in many seat adjustment positions of either compressing the restraint material, adjusting the seat slide position, or adjusting the seat back angle lessen the ease with which the restraint can be removed, reduce the chance of accidental removal, and increase the chances that the occupant will receive the benefits of a properly positioned head restraint.
iii. Finally, in addition to the two previously noted factors, it is unlikely that the head restraint will be inadvertently removed as there is a 97.7mm of travel distance from the second notch until the head restraint is fully removed from the seat; this length is much greater than the travel distance between the fully stowed position and second notch (37.5mm). The difference is easily recognized by anyone attempting to adjust the head restraint. (See figure 8 of Toyota's petition) Therefore, the overall design and operation of the rear head restraints in the subject vehicles fulfill the purpose and policy behind the S4.5 requirement.
2. The Design and performance of the rear seat head restraints provides safety benefits to a broad range of occupants and pose no risk of exacerbating whiplash injuries, making the noncompliance inconsequential:
a. Toyota stated that NHTSA elected not to mandate rear seat head restraints in vehicles; however, certain requirements for voluntarily installed rear head restraints were adopted. Toyota stated that the requirements for rear outboard head restraints are common in some respects with those of front seat restraints, but that rear seat environment and usage resulted in several differences. Toyota stated that NHTSA analyzed the usage of rear seats and studied the various types of occupants who typically occupy rear seating positions. Toyota stated that NHTSA found that 10 percent of all occupants sit in rear outboard seats, and that only 5.1 percent of those are people who are 13 years or older. Toyota stated that this justified a difference in the minimum height requirement for front and rear head restraints. The standard requires front integral head restraints to have a height of at least 800mm above the H-point  to the top of the restraint; the top of an adjustable restraint must reach at least 800mm and cannot be adjustable below 750mm. Rear outboard head restraints must have a height not less than 750mm in any position of adjustment. Toyota quoted the agency as stating: “The agency has estimated that a 750mm head restraint height would offer whiplash protection to nearly the entire population of rear seat occupants.”
Toyota stated that the rear outboard restraints in the subject vehicles meet or surpass all the requirements in the completely stowed position and in the first notch position. Toyota stated that there is nothing about the performance of these restraints that poses a risk of exacerbating whiplash injuries and that the noncompliance does not create such a risk.
b. Rear head restraint height well surpasses the requirements of the standard: Toyota stated that when NHTSA established height requirements for mandatory front head restraints, an adjustment range was adopted that was estimated to ensure that the top of the head restraint exceeded the head center of gravity for an estimated 93 percent of all adults. Toyota stated that research conducted since the implementation of the previous height requirements has shown that head restraints should be at least as high as the center of gravity of the occupant's head to adequately control motion of the head and neck relative to the torso.
Toyota stated that the rear head restraints in the subject vehicles not only surpass the 750mm requirement for voluntarily installed rear seat restraints, but also can be adjusted to surpass the 800mm requirement applicable to mandatory front seat head restraints. In the fully stowed position, the rear outboard head restraints measure 780mm above the H-point. In the first notch position they are 797mm above the H-point, and in the second notch position they are 816mm above the H-point. (See figure 9 of Toyota's petition)
Toyota stated that it evaluated the height of the rear outboard head restraints in the subject vehicles against the center of gravity of various size occupants. In the first notch position, which can be attained by simply pulling upward on the head restraint in a Start Printed Page 17082manner compliant with S4.5, the center of gravity of the head of an occupant the size of an AM95 is below the top of the head restraint. (See figure 10 of Toyota's petition) Therefore, for virtually 100 percent of the female adult population of the United States  and over 95 percent of the U.S. male adult population, the rear outboard head restraints can help “adequately control motion of the head and neck relative to the torso” in a position that can be adjusted in compliance with the standard. It can also protect occupants larger than AM95 occupants when adjusted to the second notch position.
c. Toyota stated that the rear outboard head restraints in the subject vehicles meet and surpass all other performance requirements of the standard not only in the fully stowed position, but also in both the first and second notch positons. These include energy absorption (S4.2.5 and S5.2.5), backset retention (S4.2.7 and S5.2.7), and height retention (S4.2.6 and S5.2.6). Toyota summarized the performance in tables that can be found in its petition. It contended that there is nothing about the performance of the rear outboard head restraints in the subject vehicles that in relation to the additional criteria set forth in these tables that poses a risk of exacerbating whiplash injuries.
3. The occupancy rates and usage of the Lexus RX model further supports the conclusion that the noncompliance with S4.5 is inconsequential to safety: The rear seat vehicle environment has unique aspects in terms of occupancy rates and usage. This is why the agency decided to specify different requirements for front and rear seat head restraints. As noted above, the agency found that, in the general vehicle population studied for the purpose of adopting FMVSS 202a requirements, the occupancy rate for the rear outboard seating positions was about 10 percent. Toyota undertook an analysis of the National Automotive Sampling System (NASS) General Estimates System (GES) data to better understand the outboard rear seat occupancy rate in the subject vehicles. The subject vehicles are the fourth generation of the Lexus RX model series, which was introduced for MY2016. Because the exposure of this model year in the fleet is somewhat limited, and NASS GES does not yet contain MY2016 data, the three previous generations of the RX model going back to MY 1999 were used for the analysis. While there are design differences in each generation, all are mid-size SUV's, and it is expected that the user demographics and rear seat usage would be representative of the subject vehicles.
Based on the analysis, the occupancy rate for rear outboard seat occupants in all types of crashes for the RX models analyzed was 10 percent—meaning that 10 percent of the RX vehicles involved in crashes have a rear outboard passenger. This is the same as what NHTSA found to be the occupancy rate in the general vehicle population when it undertook the FMVSS 202a rulemaking. In a smaller subset of only rear crashes, the occupancy rate in the RX models is slightly higher, but still small—only 13 percent.
The data analyzed were insufficient to provide an understanding of the size of the occupants who ride in the rear outboard positions in the subject vehicles. However, considering that the occupancy rate is consistent with NHTSA's previous analyses, there is no reason to believe that occupant sizes would be significantly different from the general vehicle population. In the Final Regulatory Impact Analysis, the agency found that, of the small percentage of occupants that ride in the rear of vehicles generally, 83 percent of all rear outboard occupants were 5′9″ or less and 17 percent were 5′10″ and above. The latter is the height of the average U.S. male. As outlined in Section II, above, the rear outboard head restraints in the subject vehicles are designed so that the center of gravity of the head of the small percentage of large occupants who may occasionally ride in the rear seats of the subject vehicles is below the top of the head restraint. Therefore, the number of occupants who may actually seek to adjust the rear outboard head restraints in the subject vehicles is insignificant, further justifying a finding that the paragraph S4.5 noncompliance is inconsequential to vehicle safety.
Toyota stated that it is unaware of any consumer complaints, field reports, accidents, or injuries that have occurred as a result of this noncompliance as of December 15, 2016.
Toyota concluded by expressing the belief that the subject noncompliance is inconsequential as it relates to motor vehicle safety, and that its petition to be exempted from providing notification of the noncompliance, as required by 49 U.S.C. 30118, and a remedy for the noncompliance, as required by 49 U.S.C. 30120, should be granted.
NHTSA notes that the statutory provisions (49 U.S.C. 30118(d) and 30120(h)) that permit manufacturers to file petitions for a determination of inconsequentiality allow NHTSA to exempt manufacturers only from the duties found in sections 30118 and 30120, respectively, to notify owners, purchasers, and dealers of a defect or noncompliance and to remedy the defect or noncompliance. Therefore, any decision on this petition only applies to the subject vehicles that Toyota no longer controlled at the time it determined that the noncompliance existed. However, any decision on this petition does not relieve vehicle distributors and dealers of the prohibitions on the sale, offer for sale, or introduction or delivery for introduction into interstate commerce of the noncompliant vehicles under their control after Toyota notified them that the subject noncompliance existed.Start Signature
Jeffrey M. Giuseppe,
Director, Office of Vehicle Safety Compliance.
3. Some models are equipped with a power reclining seat back with the same adjustment range as the manual reclining seat back, but which can be replaced in positions between the 2 degree increments of the manual seat back.Back to Citation
4. The H-point is defined by a test machine placed in the vehicle seat. From the side, the H-point represents the pivot point between the torso and upper leg portions of the test machine, or roughly like the hip joint of a 50th percentile male occupant viewed laterally.Back to Citation
5. NHTSA assumed during the rulemaking that the center of gravity of the head of the AM95 was 105mm from the top of the head. See FRIA at page 44. See also 66 FR at page 975. Figure 10, below, uses this value. The center of gravity of the head of the BIORID III ATD is 110.5mm below the top of the head.Back to Citation
6. “The center of gravity height of a 99th percentile female reclined at 25 degrees is about 19mm below a 750mm (29.5 inches) high head restraint at a 50mm (2 inch) backset.”Back to Citation
[FR Doc. 2017-06959 Filed 4-6-17; 8:45 am]
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