Interpretation ID: 1982-1.23

TYPE: INTERPRETATION-NHTSA

DATE: 03/10/82

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: K-D Lamp Co.

TITLE: FMVSS INTERPRETATION

TEXT:

FMVSS INTERPRETATION

NOA-30

Mr. Chris Tuerck Assistant Chief Engineer K-D Lamp Company 1910 Elm Street Cincinnati, Ohio 45210

Dear Mr. Tuerck:

This responds to your letter asking whether your sample turn signal and hazard switch design complies with the labeling requirements of Federal Motor Vehicle Safety Standard No. 101-80, Controls and Displays.

By way of background information, I would point out that the agency does not give advance approvals of vehicles or equipment. The National Traffic and Motor Vehicle Safety Act places the responsibility on the manufacturer to determine whether its vehicles or equipment comply with applicable requirements. A manufacturer then certifies that its vehicles or equipment comply with all applicable standards. The following interpretation only represents the agency's opinion based on the information provided in your letter.

Your letter states that the switch is used primarily on Class 7 and Class 8 trucks and truck tractors. We therefore assume that it would only be used on trucks with a GVWR of 10,000 pounds or more. We make that assumption because Standard No. 101-80 includes requirements for a vehicle's displays in addition to its controls if it has a GVWR of less than 10,000 pounds. As explained below, it is our opinion that the sample switch does comply with the labeling requirements of Standard No. 101-80.

The sample turn signal and hazard switch is designed to be clamped onto a vehicle's steering column to the left of the driver and looks something like a box. We assume that the box is to be installed so that the side of the box which has two pushbuttons on it, marked 'R' and 'L,' is on the left. Pressing the 'R' pushbutton, which is located toward the back, activates the right turn signal. Pressing the 'L' pushbutton, which is located toward the front, activates the left turn signal. Both buttons must be pushed simultaneously for the hazard warning signal.

Most of the identification for the switch is located on top of the box. Just above the right turn pushbutton is a thick black arrow pointing to the right. Just above the left turn pushbutton is a thick black arrow pointing to the left. Above each pushbutton there is also a triangle outlined in black, i.e., the hazard warning symbol specified by Table 1 of Standard No. 101-80. Between those identifications is located a pushbutton, identified by the use of both words and symbols, which clears the turn signals or hazard warning signal. The top of the box also includes three jewel-type pilot indicators which indicate when the turn signals or hazard warning signal are activated and additional labeling explaining the method of operation for the hazard warning signal.

Section S5.2.1 of Standard No. 101-80 states in relevant part:

Vehicle controls shall be identified as follows:

(a) Except as specified in S5.2.1(b), any hand-operated control listed in column 3 of Table 1 that has a symbol designated in column 3 shall be identified by that symbol. Such a control may, in addition, be identified by the word or abbreviation shown in column 2. Any such control for which no symbol is shown in Table 1 shall be identified by the word or abbreviation shown in column 2. Additional words or symbols may be used at the manufacturer's discretion for the purpose of clarity. The identification shall be placed on or adjacent to the control. The identification shall, under the conditions of S6, be visible to the driver and, except as provided in S5.2.1.1 and S5.2.1.2, appear to the driver perceptually upright.

Both the turn signal and the hazard warning signal are listed in column 1 of Table 1 and have symbols designated in Column 3. Therefore, Standard No. 101-80 requires that those controls be identified by the designated symbols.

The primary issue raised by your design is whether the turn signal control symbol specified by Table 1, a pair of arrows, may be split where there are independent controls for the left and right turn signals. As explained below, it is our opinion that the pair of arrows may be split in that particular circumstance.

The symbol for the turn signal control is the same as the symbol specified by Table 2 for the turn signal display. A footnote to Table 2 explains that while the pair of arrows is a single symbol, the two arrows will be considered separate symbols when the indicators for the left and right turn operate independently and may be spaced accordingly.

Table 1 does not include that footnote for the turn signal control. A turn signal control would normally be expected to consist of one button or lever and would be required to be identified by the pair of arrows as one symbol. It is our interpretation, however, that the two arrows may be considered separate symbols where there are independent controls for the left and right turn signals, as in your sample switch. Separating the two arrows in such an instance has the advantage of indicating the direction of the signal activated by each pushbutton.

Table 2 also includes a footnote that indicates that the framed areas of the turn signal display symbol may be filled in. While Table 1 has a footnote that indicates that the framed areas of several symbols may be filled in, the turn signal control is not among those listed. It is our interpretation, however, in light of the footnote in Table 2, that a manufacturer may fill in the framed areas of the turn signal symbol whether it is used for a control or a display.

Thus, the symbols used on the sample switch for the turn signal controls are those specified by Standard No. 101-80.

Sincerely,

Original Signed By

Frank Berndt Chief Counsel

August 13, 1981

National Highway Traffic Safety Administration Office of Chief Counsel 400 Seventh Street, S.W. Washington. D.C. 20590

ATTH: Mr. Frank Berndt-Chief Counsel

Dear Mr. Berndt:

This is a request for a legal opinion regarding compliance of our Model KD723 Turn Signal and Hazard Switch with FMVSS 571.101-80 Controls and Displays. It is a push button switch of the clamp on style (see attached Instruction Sheet) and is used primarily on Class 7 and Class 8 trucks and truck tractors. This switch has been manufactured by K-D Lamp Co. for approximately twenty years and is specified by the McLean Trucking Co. on all their new truck tractors.

The push button design had led to some problems in marking the switch to meet 571.101-80 requirements. We had tried and discussed various designs of labels which would properly identify the various switch functions and had arrived at a design which we felt would be satisfactory. At about the same time an order was received from GMC Truck and Coach for their version of this switch. We discussed the label with their engineers and they in turn submitted the label design to their legal department for review. Their legal department was of the opinion that the label would bring our Model 723 switch into compliance with FMVSS 571.101-80.

There are three jewel type pilot indicators in the center of the cover. The two (2) outer indicators are green and meet the size (area of 3/16" dia. circle) and functional requirements of SAE Standard J588e Turn Signal Lamps which is a part of FMVSS 108. The same green indicators also meet the requirement of flashing simultaneously when the hazard system is turned on as specified in SAE Standard J910 Hazard Warning Switch. This standard is also a part of FMVSS 108. This latter function agrees in part with Note 2 under Table 2 of FMVSS 571.101-80. The center pilot indicator is red and serves only as a delineator between the two green indicators.

Early this year I visited with Mr. John Carson, Office of Vehicle Safety Standards and Mr. Edward Glancy of your office to discuss the subject switch. They, quite properly did not offer any solutions for bringing the switch into compliance. They suggested that, when we developed a method and design for marking the switch, we send you all the pertinent information along with a print of the label and switch (print attached) and a sample switch with label to show the color scheme. They felt that the print and the sample switch would provide sufficient data so that your office could determine if the switch is in compliance with FMVSS 571.101-80. Under seperate cover we are sending the switch via UPS to your attention.

We apologize for being so late in requesting your opinion and respectfully ask that this matter be handled as expeditiously as possible since the final dead line of September 1,1981 is very near.

Sincerely,

Chris Tuerck Ass't. Chief Engineer