Interpretation ID: nht91-2.34

DATE: March 14, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: George Smyth -- Municipal/Refuse Fleet Sales, Palm Peterbilt-GMC Trucks, Inc.

TITLE: None

ATTACHMT: Attached to letter dated 7-30-75 from Richard B. Dyson (signed by Z. Taylor Vinson) to Byron A. Crampton; Also attached to letter dated 8-27-68 from Eugene B. Laskin to Barry G. Seitz (Std. 203; Std. 204); Also attached to letter dated 3-4-68 from George C. Nield to Earl Allgaier; Also attached to letter from Joseph R. O'Gorman to Nathan Darby

TEXT:

This responds to your letter requesting an opinion on the legality of modifying left-hand drive trucks by adding right-hand drive. I apologize for the delay in our response.

We assume that your question is directed towards municipal refuse trucks. Because of budget constraints, we understand that refuse trucks with dual controls are increasing in popularity because they allow one-man trash collection, rather than the two or three man crews on older trucks, and that 3,000 to 4,000 such trucks are manufactured annually. We also understand that about 80% of these trucks are equipped with a fold-down seat at the auxiliary driving position, and that the right hand driving position is used in start-stop slow speed operation in residential neighborhoods, while the left hand position is used in driving to and from work sites.

According to your letter, the trucks are manufactured with left-hand drive only, and are then modified by body companies for the end user. The modification, as we understand it, is to add a steering wheel to the right-hand side, along with an accelerator, brake pedal, horn, hazard warning, and turn signals. This indicates that the vehicle may be operated from both sides. You commented that "the unsafe part of the conversion, as we see it, is that the windshield wiper controls, parking brake, start and stop switch, along with all gauges are on the lefthand side out of reach when the driver is in the drivers position." The following represents our opinion based on the facts provided in your letter.

Standard No. 101, Controls and Displays, specifies requirements in relation to the driver. It requires that if certain controls are furnished, they must be operable by the driver, and that if certain displays are furnished, they must be visible to the driver. See section S5.1. (Since your letter concerns trucks, it should be noted that Standard No. 101's display requirements do not apply to vehicles with a GVWR of 10,000 pounds or higher.) However, Standard No. 101 does not require that the driver's position be on a particular side of a vehicle. Thus, it permits a vehicle to be either left-hand or right-hand drive. The issue raised by your letter is how our standards apply when a vehicle is both left-hand drive and right-hand drive, i.e., the vehicle has two driver positions.

The term "driver" is defined as "the occupant of a motor vehicle seated immediately behind the steering control system." See section 571.3. It is our opinion that the providing of a steering control system is ordinarily sufficient to create a driver's position, but that for vehicles with two driver's positions, the requirements specified in relation to the driver need be met only from the position intended by the original manufacturer as the primary driving position. However, if that manufacturer, or a subsequent converter, intends the driving positions to be used interchangeably under similar driving conditions so that neither driving position could be considered as primary over the other, then all Federal requirements would have to be met, e.g., the requirement in Standard No. 207 Seating Systems that a seat be provided for the driver.

We addressed this issue previously in a letter sent July 30, 1975 to Byron A. Crampton of the Truck Body and Equipment Association, Inc., in which the agency informed Mr. Crampton that a dual-control garbage truck that contained an auxiliary driver's position on the right side of the vehicle, with a separate set of controls, need not have a seat at the auxiliary position, and that access to such controls as the heater, wipers, and lights from this position was not required. Earlier, in an interpretation issued in 1968, with respect to driver education cars with dual controls, the agency considered the "driver, of such a vehicle to be the person seated behind the primary controls.

We appreciate your concern with safety that occasioned your letter. You may be reassured to know that the National Truck Equipment Association has had no reports of accidents or injuries due to the dual control feature of refuse trucks. However, it is possible that the agency could institute rulemaking in the future that would require a full set of controls and seats in dual control vehicles.

Your second question relates to noise standards. The in-cab noise standard is administered by the Department's Federal Highway Administration (FHWA). We have forwarded a copy of your letter to that agency's Office of Motor Carrier Safety so that they can respond to your question.

I hope that this information is useful to you.