Dictionary

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.

'Liability' refers to councils or highway authorities being found legally responsible for defective roads, or road design, that leads to injury or death. 

A cycleway composed of a cycle lane separated from the carriageway by means of light protection.

LIP is an abbreviation of Local Implementation Plan.

LIPs are part of the structure that Transport for London (TfL) uses to deliver transport strategy in inner and outer London, by allocating money to the boroughs.

Aside from the general aspirartion that everyone should have a 'liveable' neighbourhood, this is a London-specific programme run by TfL for transport improvements around town centres, residential areas and transport interchanges, linked to the MTS, and

A Local Transport Note (usually abbreviated to LTN) is traffic management guidance for local authorities, issued by the British Department for Transport.

A Low Traffic Neighbourhood (LTN) is an area-wide intervention designed to reduce motor traffic levels across a series of streets, by confining through traffic to main roads (or 'boundary' roads).