'Udhayam NH4' is an upcoming Tamil film directed by debutant Manimaran, a former associate of National award winner Vetrimaaran. The film features Siddharth and newcomer Ashrita Shetty in the lead roles. Vetrimaaran has written the script, done the screenplay, and also penned the dialogues for this film. The film's soundtrack and background score were composed by G. V. Prakash Kumar. The film is expected to release along with a Telugu version in April 2013.

It is being presented in Telugu as NH4 (National Highway Bangalore to Chennai) under Lakshmi Ganapathi films banner by Subramanyam and Suresh.S.Updated April 3, 2013