FMVSS121 气压制动系统.pdf,49 CFR PART 571 FMVSS No. 121 AIR BRAKE SYSTEMS Development of Standards Date Presented No. Revised Issue Date Effective Date Remarks by JASIC 1. 41FR29703 1976/7/19 2. 56FR50666 1991/10/8 3. 57FR30911 1992/7/13 4. 57FR37902 199
FMVSSNo.121 AIRBRAKESYSTEMS DevelopmentofStandards No.RevisedIssueDateEffectiveDate DatePresented byJASIC Remarks 1.41FR297031976/7/19 2.56FR506661991/10/8 3.57FR309111992/7/13 4.57FR379021992/8/21 5.57FR477931992/10/201993/4/23 6.58FR366151993/7/81993/8/31 ...
571.121 Standard No. 121; Air brake systems. S1. Scope. This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. S2. Purpose. The purpose of this standard is to insure safe braking performance under normal and emergency ...
§571.121StandardNo.121;Airbrake systems. S1.Scope.Thisstandardestablishes performanceandequipmentrequire- mentsforbrakingsystemsonvehicles equippedwithairbrakesystems. S2.Purpose.Thepurposeofthis standardistoinsuresafebrakingper- formanceundernormalandemergency ...
Road tests were conducted on 3truck tractors and 4 semitrailers to evaluate the effects of Federal Motor Vehicle Safety Standard (FMVSS) No. 121,Air Brake Systems--Trucks, Buses and Trailers,on braking system performance. Tests were run in accordance with procedures specified in the standard and...
(GVWR), and no capacity to carry occupants other than the driver and operating crew; (e) Any trailer that has a GVWR of more than 120,000 pounds and whose body conforms to that described in the definition of heavy hauler trailer set forth in S4; (f) Any trailer that has an unloaded...
(3) Any truck or bus that has a speed attainable in two miles of not more than 33 mph; (4) Any truck that has a speed attainable in two miles of not more than 45 mph, an unloaded vehicle weight that is not less than 95% of its GVWR and no capacity to carry occupants other ...
FMVSS标准编号及内容
000 per axle with little to no residual value upon resale. This is one of the reasons disc brakes have not entrenched themselves in the North American market, he explains. The other is need. “Many vocations, including over-the-road, don’t need the minimal additional braking stability at ...
美国汽车安全技术法规 FMVSS 体系结构及法规项目名称 No No 101 123 103 104 111 105 106 116 121 122 135 109 110 117 119 120 129 138 125 108 CategoryCategory Active Safety Total 26 Warning Devices Lamps Reflective Devices and Associated Equipment Light and Signal System 警告装置 灯具 反射装置和辅...