Nathan Corrigan (20), Petey McNamee (20) and Peter Finnegan (21) tragically died at Garvaghey in the early hours of Monday, December 27 after a night out.
The vehicle they were travelling in was in collision with an articulated lorry.
All three were laid to rest at the weekend following separate funeral services.
The area of the collision is on the 15-mile section of the road which connects Omagh and Ballygawley.
Some 16 people have died on that section in the past 15 years alone.
The deadliest section, between Omagh and Strabane, has claimed 17 lives in the same period.
The road in its entirety stretches from outside Derry city, running through Strabane and Omagh, linking with the N2 at the border at Aughnacloy.
The plan to develop a new multi-million pound A5 dual carriageway was one of the first major announcements of the new DUP and Sinn Féin led Executive in 2007.
July 2022 will mark the 15th anniversary of that announcement.
Since then, the infrastructure project has been hit by planning errors and three legal challenges led by the Alternative A5 Alliance, largely made up of landowners, setting the process back years.
A critical report by the Planning Appeals Commission (PAC) last year brought yet more delay, with new assessments on flood risk, environmental impact and possible alternatives to be carried out.
A fourth public inquiry is to be reconvened later this year.
Infrastructure Minister Nichola Mallon responded to the PAC report by reaffirming her commitment to the scheme.
But the delays mean the construction of the first section, between Strabane and Newbuildings, is unlikely to start until 2023 at the earliest.Tags: