The effect of brake adjustment on braking performance. Final report.

Mode of access: Internet.

Harmonization of braking regulations - report number 6: testing to address surface friction and vehicle braking efficiency comments to the SNPRM. Interim report.

Mode of access: Internet.

Correlation of braking system defects and performance inspection. Volume II: technical report. Final report.

Mode of access: Internet.

Correlation of braking system defects and performance inspection. Volume I: summary report.

National Highway Traffic Safety Administration, Washington, D.C.

Harmonization of braking regulations - report number 5: testing for development and evaluation of the supplemental notice of proposed rulemaking on harmonization of passenger car brake standards. Final report.

Mode of access: Internet.

Using an outflow meter to predict braking traction speed gradients as a function of surface tension. Technical report.

Mode of access: Internet.

Effects of pavement grooving on friction, braking, and vehicle control. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Effect of rate of change of slip on the peak braking coefficient of passenger car tires. Technical report.

Mode of access: Internet.

Effects of weight distributing hitch torque on car-trailer directional control and braking. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

An in-service evaluation of the performance, reliability, maintainability, and durability of antilock braking systems (ABSs) for semitrailers. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Trailer braking performance - recreational vehicles. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Truck tire cornering and braking traction study. Final report.

Mode of access: Internet.

Truck tire cornering and braking traction study /

Mode of access: Internet.

Optimum switching point assessment of parallel braking resistor and serial current limiter for power system stability enhancement

A new control algorithm using parallel braking resistor (BR) and serial fault current limiter (FCL) for power system transient stability enhancement is presented in this paper. The proposed control algorithm can prevent transient instability during first swing by immediately taking away the transient energy gained in faulted period. It can also reduce generator oscillation time and efficiently make system back to the post-fault equilibrium. The algorithm is based on a new system energy function based method to choose optimal switching point. The parallel BR and serial FCL resistor can be switched at the calculated optimal point to get the best control result. This method allows optimum dissipation of the transient energy caused by disturbance so to make system back to equilibrium in minimum time. Case studies are given to verify the efficiency and effectiveness of this new control algorithm.

Head and eye movements and lane keeping in drivers with hemianopia and quadrantanopia compared to controls

Purpose: To compare the eye and head movements and lane-keeping of drivers with hemianopia and quadrantanopia with that of age-matched controls when driving under real world conditions. Methods: Participants included 22 hemianopes and 8 quadrantanopes (M age 53 yrs) and 30 persons with normal visual fields (M age 52 yrs) who were ≥ 6 months from the brain injury date and either a current driver or aiming to resume driving. All participants drove an instrumented dual-brake vehicle along a 14-mile route in traffic that included non-interstate city driving and interstate driving. Driving performance was scored using a standardised assessment system by two “backseat” raters and the Vigil Vanguard system which provides objective measures of speed, braking and acceleration, cornering, and video-based footage from which eye and head movements and lane-keeping can be derived. Results: As compared to drivers with normal visual fields, drivers with hemianopia or quadrantanopia on average were significantly more likely to drive slower, to exhibit less excessive cornering forces or acceleration, and to execute more shoulder movements off the seat. Those hemianopic and quadrantanopic drivers rated as safe to drive by the backseat evaluator made significantly more excursive eye movements, exhibited more stable lane positioning, less sudden braking events and drove at higher speeds than those rated as unsafe, while there was no difference between safe and unsafe drivers in head movements. Conclusions: Persons with hemianopic and quadrantanopic field defects rated as safe to drive have different driving characteristics compared to those rated as unsafe when assessed using objective measures of driving performance.