Interpretation ID: aiam0485

Mr. E. M. Ryan, Chief Design Engineer, Ward School Bus Mfg., Inc., P. O. Box 849, Conway, AR, 72032; Mr. E. M. Ryan
Chief Design Engineer
Ward School Bus Mfg.
Inc.
P. O. Box 849
Conway
AR
72032;

Dear Mr. Ryan: Your letter of October 28, 1971, to Mr. Stan Haranski, Truck Body an Equipment Association, Inc., concerning switching arrangements for school bus red signal lamps, has been forwarded to this Office for reply.; Paragraph S4.1.4(a) of Federal Motor Vehicle Safety Standard No. 10 requires that the four red signal lamps be controlled by a manually actuated switch. A two-way switch, whereby all four lamps are activated when the switch is in one position, and the two rear lamps only are activated when the switch is in the opposite position, would not be in violation of this requirement of Standard No. 108.; Sincerely, E. T. Driver, Director, Office of Operating Systems, Moto Vehicle Programs;