Interpretation ID: nht93-2.51

DATE: April 13, 1993

FROM: Bob Davis -- Quality Control Mgr., Horton Emergency Vehicles

TO: David Elias -- Chief Counsel, NHTSA - DOT

TITLE: None

ATTACHMT: Attached to letter dated 7/27/93 from John Womack to Bob Davis (A41; Std. 206)

TEXT:

I would like to request an interpretation on Federal Motor Vehicle Safety Standard (FMVSS) 571.206 "Door locks and door retention components".

We are an Ambulance and Emergency Vehicle manufacturer and must comply with this Standard. We are concerned with this particular Standard because all of our vehicles have two (2) rear doors. The streetside door is closed first with it's own double (top & bottom) two step latch and an inside and outside release handle with locking features both inside and outside. The curbside door is closed last of which overlaps the streetside door, and it too has a double (top & bottom) two step latch and same locking features as the left.

Some of our customers have requested that we eliminate the inside handle and locking features on the streetside door because they have people trying to open the streetside door from the inside quite frequently. They of course can't due to the curbside door overlapping this door, thus preventing them from doing so.

If we should eliminate both the inside door release handle and the inside/outside locking features, leaving only an outside release handle, will we still be able to comply with Code Of Federal Regulations Transportation 571.206?

Under section S4.1.3 "Door Locks" it states that EACH door shall be equipped with its's own locking mechanism. We are looking at this as if one of the doors is trapped by the other door, and the other door is lockable, doesn't this in a sense make the trapped door also able to become locked?

We would appreciate it very much if we could get an answer on this by April 27, 1993.