The purpose of this research was to explore the changes in children's bicycle helmet use and motor vehicle bicycle related injuries in Hillsborough County, Florida before and after passage of the Florida's bicycle helmet law for children under the age of 16. The results show a significant increase in bicycle helmet use among children, ages 5-13, in the post-law years compared with the pre-law y...

In recent years, many states and localities in the USA have enacted bicycle helmet laws. We estimate the effects of these laws on injuries requiring emergency department treatment. Using hospital-level panel data and triple difference models, we find helmet laws are associated with reductions in bicycle-related head injuries among children. However, laws also are associated with decreases in no...

BACKGROUND We studied the effect of key development and expansion of an off-road multipurpose trail system in Minneapolis, Minnesota between 2000 and 2007 to understand whether infrastructure investments are associated with increases in commuting by bicycle. METHODS We used repeated measures regression on tract-level (N = 116 tracts) data to examine changes in bicycle commuting between 2000 a...

BACKGROUND Bicycling is a popular means of recreation and transportation for children; however, it is a leading cause of recreational injury. Bicycle skill development and safety education are important methods of bicycle injury prevention. OBJECTIVE To determine the effectiveness of bicycle skills training programmes in reducing bicycle-related injuries in children and youth. METHODS Sixte...

Background. Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs. Methods. Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery...

You probably know how to ride a bicycle, but would you even recognize the equations of bicycle motion? The equations are clearly not necessary for riding a bike, but are they sufficient? Suppose, that upon seeing your first bicycle, you had derived the equations of motion from scratch, starting with F=ma. Would you shout “Eureka” then jump on and start riding? No, the equations of motion are ir...

Some surveys indicate that providing bicycle lanes and paths may encourage more people to commute by bicycle. The presence of a striped lane or separated path can increase a cyclist’s perception of safety. With growing concerns over traffic congestion and vehicle pollution, public policy makers are increasingly promoting bicycling as an alternative for commuting and other utilitarian trip purpo...

The motivation for this paper comes from the study of a simple model of bicycle motion. The bicycle is modeled as an oriented segment in the plane of fixed length `, the wheelbase of the bicycle. The motion is constrained so that the segment is always tangent to the path of the rear wheel; this non-holonomic constraint is due to the fact that the rear wheel is fixed on the frame, whereas the fr...

In order to understand the overtaking behavior of, overtaking physical separation events between bicycles and mopeds was taken out. According to the analytical model of road bicycle passing events vehicle spatial features, the bicycle passing events into free events overtaking, adjacent events and blocked events, and based on the bicycle traffic flow velocity distribution characteristics and bi...

BACKGROUND Bicycle use, despite its proven health and other benefits, is rarely part of everyday travel for many people due to the perceived risk of injury from collision crashes. This article investigated the role of physical vs. attention conspicuity in preventing bicycle crashes involving a motor vehicle in New Zealand. METHODS The Taupo Bicycle Study involved 2590 adult cyclists recruited...