An 'access-only' road or street is that has a ban on motor traffic using it, except for access. Typically this signed with Diagram 620 'Except for Access' in conjunction with Diagram 619, 'motor vehicles prohibited'.
'Authority creep' is the assumption that because an individual is an expert in one particular area, they are able to speak with authority on another field, often only tenuously related to the individual's area of expertise.
Capital (spending) refers to an amount spent on improving, or building, an asset. With regards to cycling, this might typically involve investment in the construction of new cycleways, improved junctions, or links between urban areas.
Generally the bit motor vehicles drive on (called the road by some). Pedestrians and cycle users have every right to use the carriageway unless prohibited by a Traffic Regulation Order (sometimes used on bridges and tunnels) or if it is a motorway.
A term used to refer to cycles and motor traffic being 'combined' on the carriageway, i.e. without any separate cycle provision. 'Combined traffic' should only occur in low speed, low traffic environments.
This layout is obviously found (a lot) in the Danish city of Copenhagen which is rather more cycle-friendly than London. The arrangement has a footway, then a cycle track and buses stopping next to the cycle track.
An informal, leaderless bike ride that meets on the last Friday of every month, in cities around the world. There is no route planned; the ride simply follows those who happen to be at the head of the group.
A route specifically for bicycle traffic that does not run parallel to an existing highway - it may, for instance, connect a new development to a town by the most direct route, while the road network is more circuitous.
'Cycle training' refers to any programme of instruction in cycling proficiency, be it simply learning to ride and handle a cycle, learning road rules and behaviour, or attempting to deal with more complex road environments.
Cycling Level of Service (or CLoS for short) is an audit tool developed by Transport for London. It is designed to assess the quality of cycling provision in existing (and proposed) schemes, with a final score out of 100.
An information sign (white lettering on blue rectangle), rather than a 'no cycling' sign, meaning it does not require you to dismount unless it is already illegal to cycle (for instance on entering a pedestrian area or to use a pelican or zebra
A 'definitive map' is a document that county councils or unitary authorities in England and Wales (excluding inner London boroughs) have to draw up and maintain, to show all the rights of way in their ar
Many current consultations and plans attempt to cater for different types of cyclists, by suggesting that ‘confident commuters’ will be happy to use the road, whereas ‘less confident cyclists’ will instead use (less convenient)
An Act to make it unlawful to discriminate against disabled persons in connection with employment, the provision of goods, facilities and services or the disposal or management of premises; to make provision about the employment of disabled pe
The dual network is a concept which provides two types of cycling infrastructure. The theory is that experienced and confident cyclists will use the roads, while those less experienced or confident will use off-road facilities.
A junction treatment that involves vertical separation of two or more different routes, placing them at different heights. For bicycle traffic, this will typically involve an underpass, or a bridge over a road.
Home zones are a residential street treatment that involve reducing motor traffic speeds and the general dominance of motor traffic, more diverse use of street space (particularly by residents), increasing natural surveillance, and fostering a greater
A 'hybrid cycle track' is a British description for a stepped cycle track, a cycleway that is built higher than the carriageway, but lower than the footway - at an intermediate height, between the two.
A junction is the point at which roads meet; or the point at which cycleways meet roads, or each other. This creates potential conflict between users travelling in different directions, which has to be managed with good design.
A 'left hook' involves a motor vehicle overtaking a person cycling, then turning left across the latter's path. Particularly dangerous where pedestrian guard railings are in place at the edge of a pavement.
Low-level signals are small repeater lights that mirror what is displayed by the larger, conventional, traffic signals at junctions. They make it easier for people cycling to see signals that apply to them, without having to crane their necks back.
A 2013 document produced by the Greater London Authority (GLA) and Transport for London, setting out then-Mayor Boris Johnson's plan for developing cycling in the capital - in particular, a focus on physically separated infrastructure on main roads
NACTO is a coalition of transport authorities in the USA, their mission being to "exchange of transportation ideas, insights, and practices among large central cities while fostering a cooperative approach to key national transportation issues.&qu
Often cited as a key reason why local high streets are becoming less busy. It is claimed that people prefer to drive to out of town shopping centres because parking is cheaper/free, and they offer greater convenience.
A specific element of road infrastructure, used to allow pedestrians to cross larger roads in multiple phases. Often these have some physcal protection from traffic, and can be combined with pinch points.
A push-button controlled crossing which permits equestrian as well as pedestrian use. A second push-button box is mounted higher up such that the horse rider does not need to dismount to operate the crossing.
'Presumed liability' (often referred to as 'strict liability') is an element of civil law that, in crashes involving vulnerable road users, finds the more powerful road user liable by default, unless it can be clearly proven that t
A Road Safety Audit is an evaluation of a new highway scheme, before, during and after construction, with the intention of identifying potential safety issues, and to propose measures to eliminate them.
'Safety in Numbers' is the theory that there is a correlation between cycling levels in an area, or country, and the relative safety of cycling - that higher cycling levels correlate with higher safety levels.
A misguided attempt to improve child safety by reducing motor speeds on roads outside schools. Sadly these roads tend to already be clogged by cars, and children spend more time on roads where they live.
Spanish city which had historically very low levels of cycling, but which managed to raise cycling levels from 0.5% of all journeys to 6.6% by 2009, through a combination of protected cycle routes on main roads, and removal of motor traffic from areas
Shuttle working refers to the use of traffic signals to alternate flows on a one-way section of road. Most typically found at roadworks, but can also be used to create attractive conditions for cycling on, say, bridges. See example linked to below.
'Simultaneous green' junctions (or 'all-ways' green, or 'scramble', junctions) give people cycling and walking a combined dedicated green phase, while motor traffic is stopped in all directions, which allows both types of road u
Stopping Sight Distance (or SSD for short) is is the distance required for a highway user to perceive, react and stop safely, before encountering a hazard or potential collision. It is measured in a straight line between two points at the cen
'Sustainable Safety' is the Dutch principle of design which makes roads and streets easy to use, self-explanatory and safe by default, preventing crashes from occurring. A better English expression is 'Intrinsic Safety'.
Short for Sustainable Transport, Sustrans is a national charity that promotes the use of sustainable transport. Flagship projects of Sustrans include the National Cycle Network, Safe Routes to Schools, Connect2, and Free Range Kids.
A specific form of roundabout for motorists, with a spiral pattern that commits motorists to choosing the correct lane before entering the roundabout. Lane changes on the roundabout itself are eliminated.
'Uniformity of provision' is a design philosophy that means cycling infrastructure is suitable for all potential users, whether they are young or old, fast or slow, experienced or inexperienced. One design approach is employed for all potential users.
The act of using a bike for a day-to-day task, such as shopping, commuting, going to the cinema, visiting friends, etc. Any cycling done simply as a means of transport rather than as a sport or leisure activity.
A measurement of the distance at which users should be able to see left and right as they approach a junction on the minor arm. It is composed of an 'x' distance and a 'y' distance, as shown in the Highways England diagram below.