Typical passenger trains have specific weights between 400 and 800 kg per seat, but some high speed trains such as the German ICE 2 have values as high as 1100 kg/seat. Although there are some railway-specific limits to light-weight efforts, such as side wind stability, the Japanese Shinkansen (537 kg per seat) and the Copenhagen suburban trains (360kg per seat) may serve as benchmarks for ligh...

Two hundred and forty-six patients with ocular perforation were treated at the Royal Victoria Hospital, Belfast, between 1 February 1981 and 31 January 1985. Road traffic accidents were responsible for 63 injuries, all of which affected front seat occupants, and 45 occurred before implementation of the seat belt law on 1 February 1983. Following legislation there was a 60% reduction in ocular i...

When designing wheelchairs for use as motor vehicle seats, special design criteria must be followed to assure the crash safety of the wheelchair user. Failure of seating system components under crash loading conditions could lead to serious injury or fatality. In this study, seat and seat-back loading in a frontal crash are explored using computer simulation techniques . A previously validated ...

children under 3 years of age must not travel in a car or goods vehicle (other than a taxi) unless restrained in the correct child seat. children aged 3 years or over who are under 150 cm in height and weighing less than 36 kilograms must use the correct child seat, booster seat or booster cushion. rearward-facing child car seats must never be used in the front passenger seat of cars with an ac...

A great number of factors affect the uncomfortable of seats. Apart from external appearance, the most important is the comfort for users in designing an un-adjustable seat. A system or suggested principles which assist designers in designing the comfort of the seats to testees will benefit waist of users, and hence prevent them from potential discomfort and injuries. This study attempts to deve...

Research has been done on the maximum reach and ingress/egress of upright seats. However, research on recumbent seats and comparisons between recumbent and upright seats is limited. By using an eight-camera Vicon motion capture system and C-motion Visual 3D modeling software, this research compared the ingress/egress joint kinematics and maximal planar reach of an upright seat with a recumbent ...

A growing issue in the area of vehicular ride comfort is that of child safety seats. Postural, thermal and vibrational comfort considerations are finding their way into child seat design. This paper makes some observations regarding the current state of child safety seat design, then goes on to present the results of vibration tests performed over two road surfaces using two child seats and two...

This paper presents an optimal vehicle and seat suspension design for a half-car vehicle model to reduce human-body vibration (whole-body vibration). A genetic algorithm is applied to search for the optimal parameters of the seat and vehicle suspension. The desired objective is proposed as the minimization of a multi-objective function formed by the combination of seat suspension working space ...