A public hearing will be held next month, but the plans are open for comment already.

The proposed upgrades include the sections of West Tamar Highway from north of Rosevears Drive to Gravelly Beach Road, Atkinsons Road to Waldhorn Drive, Exeter to Batman Highway, and Motor Road junction.

The scope of each project is different, and proposed works include road widening, shoulder sealing, road resurfacing, new overtaking opportunities, a new footpath, vegetation clearing to improve visibility, and improvements to stormwater drainage.

Infrastructure Minister Jeremy Rockliff said the projects are aimed at maintaining the liveability of communities along the highway and improving the reliability of commuting times to and from Launceston.

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The projects are part of a $12 million state government election commitment from the 2018 election.

"Consultation with key stakeholders is already underway, and formal consultation on initial concept designs is now open to the public. Outcomes of the consultation process will help inform the detailed project designs," Mr Rockliff said.

Feedback, ideas and suggestions on the upgrade projects can be provided via an online interactive map until Friday, May 31.

The concept designs will also be on display at West Tamar Council Office at Riverside. For information, visit www.transport.tas.gov.au.

North of Rosevears Drive - Gravelly Beach Road

Atkinsons Road - Waldhorn Drive

Exeter - Batman Highway