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Event
2014-10-21
The abundance of personal electronic devices is causing a shift in individual expectations of personal mobility. These expectations are conflicting: consumers desire personalization of their devices, but manufacturers strive for commonality; some consumers view personal mobility as a chore, others as an expression of their individuality. We will explore these dichotomies, and discuss the near and mid-term shifts in the expectation of how consumers will perceive personal mobility devices.
Event
2014-10-09
Technical Paper
2014-09-30
Sanket Pawar
Abstract Off-road commercial vehicles many times have to work at remote areas in poor working conditions like reduced visibility due to fog, snow, inadequate ambient lighting, dust etc. They may not have any access to emergency facilities in such places. Challenging geographical terrains and adverse weather conditions makes the situation worse. The combination of both can further degrade working conditions. The operator may need to either work or guide his vehicle through tight places or in hilly areas having such conditions. That imposes many challenges to operator in terms of efficiency & safety of both operator & vehicle. In an effort to increase productivity and efficiency operator may miss to look at safety aspects consequently, leading to accidents that can incur heavy losses due to damages to vehicle further delaying the work. It can even lead to a life threatening emergency in some cases. On the other hand, decrease in efficiency results in increased cost of operation due to unnecessary wastage of fuel & delays in getting the work done.
Technical Paper
2014-09-30
Joshua L. Every, M. Kamel Salaani, Frank S. Barickman, Devin H. Elsasser, Dennis A. Guenther, Gary J. Heydinger, Sughosh J. Rao
Dynamic Brake Support (DBS) is a safety system that has been applied to various passenger cars and has been shown to be effective at assisting drivers in avoiding or mitigating rear-end collisions. The objective of a DBS system is to ensure that the brake system is applied quickly and at sufficient pressure when a driver responds to a collision imminent situation. DBS is capable of improving braking response due to a passenger car driver's tendency to utilize multi-stage braking. Interest is developing in using DBS on commercial vehicles. In order to evaluate the possible improvement in safety that could be realized through the use of DBS, driver braking behavior must first be analyzed to confirm that improvement is possible and necessary. To determine if this is the case, a study of the response of truck drivers' braking behavior in collision imminent situations is conducted. This paper presents the method of evaluation and results. Data was drawn from a prior NHTSA simulator study and showed that many drivers exhibited multi-stage braking during four different imminent crash scenarios.
Technical Paper
2014-09-30
Quon Kwan, Leverson Boodlal
In this particular field study, the authors have demonstrated that telematics can be used to monitor and improve safe and fuel-efficient driving behavior. Telematics was used to monitor various driver performance parameters: unsafe events (sudden accelerations and hard braking expressed as Yellow and Red events, depending on severity), speeding, engine revolutions per minute (RPM), and fuel economy (miles per gallon). The drivers consisted of two groups: drivers of day cabs and drivers of sleeper cabs. The drivers of both groups were monitored during a baseline period during which no feedback, coaching, or rewards were provided. Then, the drivers of both groups were monitored during an intervention period, during which drivers were provided with feedback, coaching, and rewards. As the result of monitoring unsafe events and of driver intervention, drivers of sleeper cabs showed a 55 percent reduction from the baseline in less severe (Yellow) unsafe events and a 60 percent reduction from the baseline in more severe (Red) unsafe events.
Standard
2014-09-18
This SAE Standard sets forth the procedures to be used in measuring sounds levels and determining the time weighted sound level at the operator's station(s) of specified off-road self-propelled work machines. This document applies to the following work machines which have operator stations as specified in SAE J1116: • Crawler Loader • Grader • Log Skidder • Wheel Loader • Crawler Tractor with Dozer • Pipelayer • Dumper • Wheel Tractor with Dozer • Trencher • Tractor Scraper • Backhoe • Sweeper • Roller/Compactor • Hydraulic Excavator • Pad Foot Wheel Compactor with Dozer • Excavator and Wheel Feller-Buncher The instrumentation requirements and specific work cycles for these machines are described. The method used to calculate the time weighted average sound level at the operator station(s) is specified for Leq(5), or optional exchange rates, during continuous operation in a work cycle representing continuous medium to heavy work. The work cycles provide a repeatable reproduceable means to uniformly measure working machines against a “yard stick.
WIP Standard
2014-09-16
J3078 provides test methods and criteria for the evaluation of the operator enclosure environment in Off-Road Self-Propelled Work Machines as defined in J1116 and Agricultural Tractors as defined in ANSI/ASAE S390 and consists of the following parts: Part 1: Terms and definitions Part 2: Air filter element test method Part 3: Pressurization test method Part 4: Heating, ventilating and air conditioning (HVAC) test method and performance Part 5: Windscreen defrosting system test method Part 6: Determination of effect of solar heating J3078/1 consists of the terms and definitions which are used in the other parts of J3708.
WIP Standard
2014-09-16
J3078/6 specifies a test method for simulating solar heating in the laboratory and measuring the radiant heat energy from a natural or simulated source. It is applicable to Off-Road Self-Propelled Work Machines as defined in J1116 and Agricultural Tractors as defined in ANSI/ASAE S390.
WIP Standard
2014-09-16
J3078/3 specifies a test method which will provide for uniform measurement of the maximum pressurization inside an operator enclosure of an earth-moving machine when equipped with a pressurization system.
WIP Standard
2014-09-16
J3078/2 specifies a uniform test method to determine performance levels of operator enclosure panel-type air filters used to filter the air entering an earth-moving machine operator enclosure with a powered fresh air system.
WIP Standard
2014-09-16
J3078/5 specifies a test method to determine the performance of windscreen defrosting systems of earth-moving machinery, fitted with an operator enclosure and a device for defrosting the windscreen. It includes tests that can be conducted with test equipment in commercially available laboratory facilities, as well as in an appropriate outdoor environment.
WIP Standard
2014-09-16
J3078/4 specifies a uniform test method for measuring the contribution to operator environmental temperature provided by a heating, ventilating and air conditioning system operating in a specific ambient environment. The method might not determine the complete climatic environment of the operator since this is also affected by heat load from sources other than those on the machine, for example solar heating. J3708/6 is to be used in conjunction with J3078/4 to determine more accurately the complete heat loading on the operator enclosure. Minimum performance levels for the machine’s operator enclosure heating, ventilating and air conditioning systems are established in J3708/4.
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