Bicycle safety

Last updated
Incident where a cyclist was hit by a car Bicycle-car accident.jpg
Incident where a cyclist was hit by a car
Segregated cycling along a Fietspad in Amsterdam, safe by avoiding conflict with traffic. Cycling Amsterdan 04.jpg
Segregated cycling along a Fietspad in Amsterdam, safe by avoiding conflict with traffic.

Bicycle safety is the use of road traffic safety practices to reduce risk associated with cycling. Risk can be defined as the number of incidents occurring for a given amount of cycling. Some of this subject matter is hotly debated: for example, which types of cycling environment or cycling infrastructure is safest for cyclists. The merits of obeying the traffic laws and using bicycle lighting at night are less controversial. Wearing a bicycle helmet may reduce the chance of head injury in the event of a crash. [1]

Contents

Most bicycling fatalities occur as a result of collision with a motor vehicle. Studies in multiple countries have found that drivers are at fault in the majority of these crashes. [2] [3] [4] [5] [6]

Crashes

The first recorded bicycle crash occurred in 1842, reportedly between Kirkpatrick McMillan, an early rider of the velocipede, and a young girl in Glasgow. The report, however, is vague and the identification disputed. [7]

The overall risk of death from a cycling accident in developed countries has diminished over the last 25 years according to a 2017 analysis of OECD statistics. [8] In the United States, cycling remains a more dangerous mode of transportation when compared to automobiles (not considering total distance traveled). [9] [ clarification needed ] According to NPR, the number of bicyclists hit by vehicles has been rising at an alarming rate since the pandemic started, and a leading cause of this poor bicycle infrastructure. [10]

The Centers for Disease Control and Prevention took account of over 32,000 automobile related deaths in 2013 [11] By comparison, WISQUARS the CDC's injury statistics website found just over 1,000 deaths from cycling in 2015. [12] Despite the relative safety compared to automobiles, the number of fatalities and hospitalizations from cycling is significantly greater in the United States compared to other western states such as Germany, Canada, and the Netherlands. [8] In a 2014 analysis, incidence of cycling death took place at a mean rate of 4.7 deaths per 100 million kilometers cycled in the U.S., compared to 1.3 deaths per 100 million kilometers in Germany, 1.0 in the Netherlands, and 1.1 in Denmark. [13] In the United Kingdom, cyclists have half of the rate (killed and serious injury per km) of motorcyclists but eight times the rate for motorists. [14]

Causes of crashes vary according to local conditions. Road conditions, weather, speed, brakes, rider visibility, bicycle and automobile traffic, driving under the influence, riding under the influence, and distracted driving are contributing factors to accidents. Many bicycle crashes are unreported and therefore not included in official statistics. [15]

[16] [17]

Findings from an international survey on underreporting of cyclist's most severe collisions found reporting rates ranging between 0% (Israel) and 35% (Germany). [15] Furthermore, there is biasing in the kinds of collisions that appear in official data (i.e. police, hospital, or insurance data). It is known that collisions where a motorised vehicle is not involved as a collision partner i.e. single cyclist, cyclist-pedestrian or cyclist-cyclist collisions have lower odds of being reported to the police. [17] [15] Lower severity collisions (including those that do not result in hospital attendance) can incur significant costs, and result in long-term effects. The Belgian SHAPES project found costs for minor injuries primarily related to loss of productivity, and other intangible costs. [18] The French ESPARR study found that close to half of those who experience a minor injury in a road traffic collision in Rhône (MAIS1 or MAIS2) still experienced regular pain after a year. [19] Therefore, the characteristics of cyclist collisions is an active area of research. In the United States, bicycle crashes may be grounds for personal injury lawsuits. [20] [21]

Hazardous slots in storm drain Curb gutter storm drain.JPG
Hazardous slots in storm drain

Hazards

Bicyclists demonstrating a safe overtaking distance with the use of pool noodles as safety wings. Bicycle demonstration with pool noodles.jpg
Bicyclists demonstrating a safe overtaking distance with the use of pool noodles as safety wings.

Hazards to bicycles include:

Bicyclists are also subject to all the same types of collisions as vehicles, but without the protection of a metal shell - although generally traveling at lower speeds. These risks can be increased when traffic participants violate the rules of the road, such as going the wrong way down a one-way street, failing to stop at a red light, or traveling at night without lights.

Traffic engineering

History

United Kingdom

During the mid-20th century, the traffic engineering solutions were sought which eased the passage of traffic through the streets and also protected vulnerable road users. [30] In the 1940s, an influential proponent of this ideology was Herbert Alker Tripp, an assistant commissioner of London's Metropolitan Police. [30] Tripp argued in his book Town Planning and Road Traffic that: "If we could segregate pedestrians completely from the wheeled traffic, we could of course abolish pedestrian casualties". [31]

This philosophy was also pursued by Colin Buchanan; his 1963 report for the UK Government Traffic in Towns , defined future government policy [30] until the end of the century. Buchanan knew that segregation had not been proven to work for cyclists: his 1958 book Mixed Blessing said: "The meagre efforts made to separate cyclists from motor traffic have failed, tracks are inadequate, the problem of treating them at junctions and intersections is completely unsolved, and the attitude of the cyclists themselves to these admittedly unsatisfactory tracks has not been as helpful as it might have been". [32]

Appropriately designed segregated space for cyclists on arterial or interurban routes appears to reduce overall risk. In Ireland, the provision of hard shoulders on interurban routes in the 1970s reportedly resulted in a 50% decrease in accidents. [33] It is reported that the Danes have also found that separate cycle tracks lead to a reduction in rural collisions. [34]

The Netherlands

The trend away from the bicycle and towards motor cars only began to decrease in the 1970s when Dutch people took to the streets to protest against the high number of child deaths on the roads: in some cases over 500 children were killed in car accidents in the Netherlands in a single year. [35] This protest movement was known as the Stop de Kindermoord (literally "Stop the Child Murder" in Dutch). [35] The success of this movement — along with other factors, such as the oil shortages of 1973–74 [36] — turned Dutch government policy around and the country began to restrict motor vehicles in its towns and cities and direct its focus on growth towards other forms of transport, with the bicycle perceived as critical in making Dutch streets safer and towns and cities more people-friendly and livable.

Cycling is a common mode of transport in the Netherlands, with 36% of the people listing the bicycle as their most frequent mode of transport on a typical day [37] [nb 1] as opposed to the car by 45% and public transport by 11%. Cycling has a modal share of 27% of all trips (urban and rural) nationwide. [40]

This high modal share for bicycle travel is enabled by unusually flat topography, excellent cycling infrastructure such as cycle paths, cycle tracks, protected intersections, ample bicycle parking and by making cycling routes shorter, quicker and more direct than car routes.

Road design

United States

Concern over national public health and active transportation have inspired states and municipalities to rethink present traffic engineering. [41] Following the viral popularity of a video created by video game developer Nick Falbo in February 2014, [42] Dutch-style protected intersections began to gain interest with metropolitan planning organizations. By 2015, Davis, California, Salt Lake City, Utah, and Austin, Texas became the first three U.S. cities to feature protected intersections. [43]

Understanding how to effectively reduce cycling accidents and injuries is in part limited by the lack of comprehensive studies regarding municipal infrastructures and the challenge of controlling for the wide range of risks involved with travel by cycle. Despite these statistical limitations, the risk of cycling accidents has been found to be lowest on segregated on-road bike lanes and routes. [44] Higher risk was associated with cycling on multi-use non-segregated facilities with a lack of any designated cycling infrastructure (i.e. sidewalks, unmarked roads). [44] Major arterial thoroughfares have also been shown to be more dangerous for cyclists than minor roads. [44]

Signage

Sign warning cyclists of recessed railway tracks in Dunedin, New Zealand Cyclists beware sign, Dunedin, NZ.JPG
Sign warning cyclists of recessed railway tracks in Dunedin, New Zealand
Signs and signals for both bicycles and drivers at an intersection in New York City NYC 07 2012 Bike lane Broadway 4012.jpg
Signs and signals for both bicycles and drivers at an intersection in New York City

United Kingdom

Following increased pressure from The Times "Cities Fit For Cycling" campaign and from other media in 2012, warning signs are now displayed on the backs of many HGVs. These signs are directed against a common type of accident which occurs when the large vehicle turns left at a junction: a cyclist trying to pass on the nearside can be crushed against the HGV's wheels, especially if the driver cannot see the cyclist. The signs, such as the winning design of the InTANDEM road safety competition launched in March 2012, advocate extra care when passing a large vehicle on the nearside. This type of 'undertaking' has been promoted in UK with the Highway Code revisions in January 2022. [45] The duty of care is now placed on the larger vehicle and they are required to stop and permit the cycle to undertake them (pass on their left) before they turn left. The aim is to reduce the type of 'left turn' tragedies such as happened to Marta Kraweic. [46] However it remains to be seen if it is a positive move to enable undertaking of left turning vehicles rather than promote caution in holding back until the vehicle ahead completes its manoeuvre and in the knowledge of mirror blind spots existing.

United States

The Federal Highway Administration has developed various bicycle signage for motorists, which have evolved over recent years. [47] Signs and signals designed exclusively for bicycles are occasionally used to denote multiple use paths and bicycle facilities. [48]

Safety equipment and strategies

Helmets

Helmet use varies from almost none in some regions to being mandatory for children to being mandatory for all cyclists. Helmets are required in most races. Helmets may help prevent head injuries, but laws that enforce helmet use have also been shown to discourage cycling. [49]

Using retroreflector and Cat-Eye on a bicycle, showing day and night difference Bicycle Safety (using retroreflector and Cat-Eye showing day & night difference).gif
Using retroreflector and Cat-Eye on a bicycle, showing day and night difference

Lights

Headlights and taillights may be mounted on the bicycle or worn by the cyclist. Bicycle lights can be powered by replaceable batteries, by internal rechargeable batteries, or powered by a hub, bottle or roller dynamo that produces electrical energy when driven by the rotation of the wheels.

Cycling lights are typically of lower power than those on motor vehicles, but well-designed lights are perfectly adequate for the lower speed of bicycles. The best bicycle headlights have beams shaped to efficiently light the road. These are also suitably conspicuous to other road users. In order to be effective, it is best for lights to be securely attached to the bicycle and properly aimed, not mounted on soft bags or loose clothing. In the US, state and local ordinances usually require this.

Audible signaling

Bells or other audible signaling devices are required equipment in many jurisdictions.

Time of day

Avoiding cycling at or around dusk is a way to reduce the number of serious bike accidents. The majority of fatal car-bike accidents occur between 6pm and 9pm, [50] likely due to the low-light conditions and potential glare of sunset, combined with traffic still being heavier, especially on weekdays.

Density

A 2024 study found that among US cities with similar populations, those with denser urban cores and higher bicycling rates had lower overall fatality rates for automobiles and pedestrians. [51] [52]

Safety education

Bike safety rodeo Trailnet-SR2S-09.jpg
Bike safety rodeo

Development

United Kingdom

Primary safety education has advanced significantly through programmes such as Effective Cycling and the development of Britain's new National Standards for cycle training. In addition to technical improvements in brakes, tyres and bicycle construction generally (for example, it is now rare for a chain to snap and throw the rider when accelerating away from a stop) there are well-understood behavioural models which actively manage the risk posed by other road users.

Cycling experts such as the UK's John Franklin emphasise the importance of assertive cycling and good road positioning. Franklin advocates the use of road positions that will give cyclists a good view of the road, will make cyclists visible to other road-users, and will discourage risky behaviour by other road users; he often advocates the use of a centre-of-lane 'primary riding position' when negotiating hazards. [53]

Motorist education

Dutch Reach

Various jurisdictions include recommending the Dutch Reach (so named because the practice started in the Netherlands) in driver education materials, to prevent hitting a cyclist with an opening door. For drivers and passengers exiting the left side of the vehicle, this involves opening the left-hand door with the right hand, forcing the person to both open the door more slowly and to turn so that bicycles approaching from behind the car are visible.

Florida

The Florida Department of Transportation (FDOT), known for its "Arrive Alive" campaign for motorists in the 1970s, has since expanded into active transportation programs such as their recent "Alert Today, Alive Tomorrow" and "Put it Down" (regarding cell phone use) campaigns for pedestrians and cyclists. [54] Additionally, FDOT also supports statewide educational programs offering educational materials and bicycle rodeos, such as the Florida PedBike Resource Center, [55] and the University of Miami BikeSafe Program. [56]

Idaho

In April 2016, Idaho became the first U.S. state to add questions about bicycle and pedestrian safety to the state driver's license exam and educational materials. The revised exam includes a bank of 11 unique questions, of which a minimum of two are automatically generated within every 40-question DMV test. [57]

Rural safety

Direct rear impacts with cyclists are more likely on arterial/rural roads, and are more likely to kill people on these roads. Data collated by the OECD indicates that rural locations account for 35% or more of cycling fatalities in Denmark, Finland, France, Great Britain, Japan, the Netherlands, and Spain. [58]

See also

Notes

    1. Up from 31% naming the bike their main mode of transport for daily activities in 2011. [38] [39]

    Related Research Articles

    <span class="mw-page-title-main">Cycling</span> Riding a bicycle

    Cycling, also known as bicycling or biking, is the activity of riding a bicycle or other type of cycle. It encompasses the use of human-powered vehicles such as balance bikes, unicycles, tricycles, and quadricycles. Cycling is practised around the world for purposes including transport, recreation, exercise, and competitive sport.

    <span class="mw-page-title-main">Road traffic safety</span> Methods and measures for reducing the risk of death and injury on roads

    Road traffic safety refers to the methods and measures used to prevent road users from being killed or seriously injured. Typical road users include pedestrians, cyclists, motorists, vehicle passengers, and passengers of on-road public transport.

    <span class="mw-page-title-main">Utility cycling</span> Bicycling as transportation

    Utility cycling encompasses any cycling done simply as a means of transport rather than as a sport or leisure activity. It is the original and most common type of cycling in the world. Cycling mobility is one of the various types of private transport and a major part of individual mobility.

    <span class="mw-page-title-main">Bicycle helmet</span> Type of helmet

    A bicycle helmet is a type of helmet designed to attenuate impacts to the head of a cyclist in collisions while minimizing side effects such as interference with peripheral vision.

    <span class="mw-page-title-main">Risk compensation</span> Behavioral theory

    Risk compensation is a theory which suggests that people typically adjust their behavior in response to perceived levels of risk, becoming more careful where they sense greater risk and less careful if they feel more protected. Although usually small in comparison to the fundamental benefits of safety interventions, it may result in a lower net benefit than expected or even higher risks.

    <span class="mw-page-title-main">Safety in numbers</span> Hypothesis

    Safety in numbers is the hypothesis that, by being part of a large physical group or mass, an individual is less likely to be the victim of a mishap, accident, attack, or other bad event. Some related theories also argue that mass behaviour can reduce accident risks, such as in traffic safety – in this case, the safety effect creates an actual reduction of danger, rather than just a redistribution over a larger group.

    <span class="mw-page-title-main">Living street</span> Traffic calming in spaces shared between road users

    A living street is a street designed with the interests of pedestrians and cyclists in mind by providing enriching and experiential spaces. Living streets also act as social spaces, allowing children to play and encouraging social interactions on a human scale, safely and legally. Living streets consider all pedestrians granting equal access to elders and those who are disabled. These roads are still available for use by motor vehicles; however, their design aims to reduce both the speed and dominance of motorized transport. The reduction of motor vehicle dominance creates more opportunities for public transportation.

    <span class="mw-page-title-main">Bike lane</span> Road traffic lane for cyclists

    Bike lanes (US) or cycle lanes (UK) are types of bikeways (cycleways) with lanes on the roadway for cyclists only. In the United Kingdom, an on-road cycle-lane can be firmly restricted to cycles or advisory. In the United States, a designated bicycle lane or class II bikeway (Caltrans) is always marked by a solid white stripe on the pavement and is for 'preferential use' by bicyclists. There is also a class III bicycle route, which has roadside signs suggesting a route for cyclists, and urging sharing the road. A class IV separated bike way (Caltrans) is a bike lane that is physically separate from motor traffic and restricted to bicyclists only.

    <span class="mw-page-title-main">Vehicular cycling</span> Practice of riding bicycles on roads while obeying roadway rules

    Vehicular cycling is the practice of riding bicycles on roads in a manner that is in accordance with the principles for driving in traffic, and in a way that places responsibility for safety on the individual.

    <span class="mw-page-title-main">Dooring</span> Type of cycling accident

    Dooring is the act of opening a motor vehicle door into the path of another road user. Dooring can happen when a driver has parked or stopped to exit their vehicle, or when passengers egress from cars, taxis and rideshares into the path of a cyclist in an adjacent travel lane. The width of the door zone in which this can happen varies, depending upon the model of car one is passing. The zone can be almost zero for a vehicle with sliding or gull-wing doors or much larger for a truck. In many cities across the globe, doorings are among the most common and injurious bike-vehicle incidents. Any passing vehicle may also strike and damage a negligently opened or left open door, or injure or kill the exiting motorist or passenger.

    <span class="mw-page-title-main">Motorcycle safety</span> Study of the risks and dangers of motorcycling

    Motorcycle safety is the study of the risks and dangers of motorcycling, and the approaches to mitigate that risk, focusing on motorcycle design, road design and traffic rules, rider training, and the cultural attitudes of motorcyclists and other road users.

    <span class="mw-page-title-main">Advanced stop line</span> Road junction markings giving some vehicles a head start

    An advanced stop line (ASL), also called advanced stop box or bike box, is a type of road marking at signalised road junctions allowing certain types of vehicle a head start when the traffic signal changes from red to green. Advanced stop lines are implemented widely in Denmark, the United Kingdom, and other European countries but the idea was first conceptualized by transportation planner Michael Lynch for the city of Portland, Oregon, in response to numerous bike crashes at intersections.

    <span class="mw-page-title-main">Cycling in the Netherlands</span> Dutch mode of transport

    Cycling is the second-most common mode of transport in the Netherlands, with 36% of Dutch people listing the bicycle as their most frequent way of getting around on a typical day, as opposed to the car (45%) and public transport (11%). Cycling has a modal share of 27% of all trips nationwide. In cities this is even higher, such as Amsterdam which has 38%, and Zwolle 46%. This high frequency of bicycle travel is enabled by excellent cycling infrastructure such as cycle paths, cycle tracks, protected intersections, ample bicycle parking and by making cycling routes shorter and more direct than car routes.

    <span class="mw-page-title-main">Cycle track</span> Cycleway between a road and sidewalk, protected by barriers

    A cycle track or cycleway (British) or bikeway, sometimes historically referred to as a sidepath, is a separate route for cycles and not motor vehicles. In some cases cycle tracks are also used by other users such as pedestrians and horse riders. A cycle track can be next to a normal road, and can either be a shared route with pedestrians or be made distinct from both the pavement and general roadway by vertical barriers or elevation differences.

    <span class="mw-page-title-main">Motorized scooter</span> Powered stand-up scooter

    A motorized scooter is a stand-up scooter powered by either a small internal combustion engine or electric hub motor in its front and/or rear wheel. Classified as a form of micro-mobility, they are generally designed with a large center deck on which the rider stands. The first motorized scooter was manufactured by Autoped in 1915.

    Bicycle helmets have been mandatory for bicycle riders of all ages in New Zealand since January 1994.

    <span class="mw-page-title-main">Traffic collision</span> Incident when a vehicle collides with another object

    A traffic collision, also known as a motor vehicle collision, occurs when a vehicle collides with another vehicle, pedestrian, animal, road debris, or other moving or stationary obstruction, such as a tree, pole or building. Traffic collisions often result in injury, disability, death, and property damage as well as financial costs to both society and the individuals involved. Road transport is the most dangerous situation people deal with on a daily basis, but casualty figures from such incidents attract less media attention than other, less frequent types of tragedy. The commonly used term car accident is increasingly falling out of favor with many government departments and organizations, with the Associated Press style guide recommending caution before using the term. Some collisions are intentional vehicle-ramming attacks, staged crashes, vehicular homicide or vehicular suicide.

    <span class="mw-page-title-main">Cycling infrastructure</span> Facilities for use by cyclists

    Cycling infrastructure is all infrastructure cyclists are allowed to use. Bikeways include bike paths, bike lanes, cycle tracks, rail trails and, where permitted, sidewalks. Roads used by motorists are also cycling infrastructure, except where cyclists are barred such as many freeways/motorways. It includes amenities such as bike racks for parking, shelters, service centers and specialized traffic signs and signals. The more cycling infrastructure, the more people get about by bicycle.

    <span class="mw-page-title-main">Protected intersection</span> At-grade road junction in which cyclists and pedestrians are separated from cars

    A protected intersection or protected junction, also known as a Dutch-style junction, is a type of at-grade road junction in which cyclists and pedestrians are separated from cars. The primary aim of junction protection is to help pedestrians and cyclists be and feel safer at road junctions.

    <span class="mw-page-title-main">Safety of cycling infrastructure</span> Overview of bicycle safety concerns

    There is debate over the safety implications of cycling infrastructure. Recent studies generally affirm that segregated cycle tracks have a better safety record between intersections than cycling on major roads in traffic. Furthermore, cycling infrastructure tends to lead to more people cycling. A higher modal share of people cycling is correlated with lower incidences of cyclist fatalities, leading to a "safety in numbers" effect though some contributors caution against this hypothesis. On the contrary, older studies tended to come to negative conclusions about mid-block cycle track safety.

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