From the City Council :

The effect of the Order is to prohibit all southbound vehicular traffic in Bellfield Street from its junction with Blackness Road to its junction with Hawkhill.
Pedestrian access and vehicular access to premises will be maintained where possible.
Alternative routes will be available via (1) Blackness Road and Hawkhill By Pass for buses and taxis and (2) Blackness Road, Urquhart Street, Brook Street, Guthrie Street, Horsewater Wynd and Hawkhill for all other vehicles.
Please forward any comments you may have regarding this proposal to the Network Management Team, City Development Department, Dundee House, 50 North Lindsay Street, Dundee, DD1 1LS and if you have any queries please call 433168.