Limerick 6.Cycle Route Design

6.1 Design Manual

"The designing of a cycle facility demands a basic insight into the intersection between the bicycle, cyclist, cycle facilities and the requirements of other transport modes. Only with this insight can the designer chose the right design for complex traffic situations with constantly changing conditions."

This is stated in the:

  • Provisions of cycle facilities
  • National Manual for Urban Areas

    This is the design manual prepared in 1998 by the Cycle Facilities Committee of the Dublin Transportation Office. It sets out a comprehensive set of guidelines for the design and provision of cycle facilities. The manual is currently under review.

    The draft Limerick City Cycle Network uses the guidelines in the Design Manual as the basis for its proposals along individual routes.

    6.2 Key Requirements for Cycling:

    The design manual sets out five key requirements for cycle facilities in harmony with characteristics of cyclists. These requirements include:

  • (a) Road Safety: The cycling infrastructure must guarantee the road safety of cyclists and other road users.
  • (b) Coherence: The cycling infrastructure must form a coherent unit, liking all origin and destination points for cyclists.
  • (c) Directness: The cycling infrastructure must offer as direct a route as possible, keeping any detours to a minimum.
  • (d) Attractiveness: The cycling infrastructure must be designed and built in a way that makes cycling attractive.
  • (e) Comfort: The cycling infrastructure must enable a quick and comfortable flow of bicycle traffic.

    6.3 Design Options/Definition:

    Cycle Track:

    Cycle Track is defined in the Road Traffic (Traffic and Parking) Regulations as meaning part of a roadway, which is reserved for the use of pedal cycles and from which all mechanically propelled vehicles other than mechanically propelled wheel chairs, are prohibited or restricted from entering.

    Cycle Tracks may be located on the roadway (referred to as on-road cycle track or cycle lane) or segregated from roadway by kerb, grass verge, etc (referred to as segregated cycle track).

    Cycle tracks are indicated by signage, white lining along edge and use of cycle logo. The cycle track may include a road surface of different colour.

    Where a cycle track is indicated by a continuous white line (s) it is a Mandatory Lane and the following conditions apply:

  • cyclists must use the track
  • motorised traffic must not enter the track except for the purpose of access to or egress from a place adjacent.

    In the case of a cycle track indicated by broken white lines it is called an Advisory lane and the following conditions apply:

  • cyclists may depart from the track e.g. to pass a stopped bus or to change direction.
  • Motorised traffic may drive along or across the track (e.g. at pinch points or junctions) when it is safe to do so.
  • Parking is not allowed on a cycle track.

    Cycle Way:

    Cycle way is defined in Section 68 of the Roads Act 1993 as a public lane reserved for the exclusive use of pedal cyclists on pedal cyclists and pedestrians. There is separate signage for cycleways, which are

  • a) Exclusively for cyclists
  • b) Shared between cyclists and pedestrians with no physical segregation
  • c) Shared between cyclists and pedestrians with physical segregation between them.

    Cycle tracks and cycleways may be one way, two way or contra flow.

    The Design Manual set out guidelines for lane width and other junction details for a wide range of scenarios. It also acknowledges the difficulties that may be encountered in achieving these guidelines in a retrofit situation.

    The preliminary design for each route will address the practical application of the guidelines to the actual conditions encountered on the route. Particular attention will be given to junction treatments, roundabouts, the use of advanced stop lines and adequate crossing facilitates.

  • Last update:28/02/2007