Helensburgh drivers: new 20mph zones are coming

By AtheneNet News Desk

Source update: 3 September 2026

Drivers across Helensburgh and Lomond are moving closer to new 20mph speed limits after the design stage of Project 20 was completed. Argyll and Bute Council says the proposals have been fully assessed and are ready for implementation.

The milestone does not mean that the limits are already in force. There is no confirmed go-live date yet, and the council’s update does not identify the individual roads affected. Those details will follow through a council map, local notices and new road signs.

The council map will identify affected roads

Argyll and Bute Council plans to publish information on its website showing where the lower limits will apply. This will include a map of the affected areas, giving residents and drivers the first detailed view of the roads included in this phase.

The source update does not state when the map will appear. Until it is published, residents cannot confirm from this announcement alone whether a particular street, school route, commuting road or other regular journey will be covered.

On-street notices will also be displayed in areas where the speed limit is due to change. These will provide a location-specific warning as implementation approaches, while updates are also expected through council social media and local newspapers.

What must happen before enforcement begins

A lead-in period is required while Temporary Traffic Regulation Orders are produced and new signage is installed. The signs will alert motorists when they are entering 20mph zones.

The council’s confirmed implementation steps are:

1. Publish information online, including the map of affected areas.
2. Display notices on streets where changes will take effect.
3. Produce the required temporary traffic orders during the lead-in period.
4. Install signs marking the new 20mph zones.

Argyll and Bute Council says the new speed limits will become legally enforceable by Police Scotland once the signage is in place. Completion of the design stage alone therefore does not change the limit shown on any road.

Drivers should follow the posted limit

Residents who want to check a regular route should monitor the council website for the map. Drivers should also look for notices on affected streets and check council updates as the go-live date approaches.

Until new limits are introduced, motorists should continue following the speed-limit signs displayed on each road. When the new signage is installed, it will show where a 20mph zone begins and indicate that the lower limit applies.

Why Project 20 is being introduced

Project 20 is part of a national road-safety initiative funded by Transport Scotland. It is intended to create safer streets and support active travel by reducing speeds on selected roads. The council says lower vehicle speeds can reduce both the likelihood and severity of collisions, particularly in built-up areas with more pedestrians, cyclists and other vulnerable road users.

The Helensburgh and Lomond proposals were developed with input from elected members, community councils, emergency services and local service providers. After implementation, the council will monitor and review the measures to assess their effectiveness and inform later phases of Project 20.

Source: Argyll and Bute Council