Road watch: Crash chokes southern traffic A CRASH involving a car and a cyclist is causing delays at the intersection of Marion and Sturt roads. City bound traffic on Marion Rd is experiencing long delays and commuters on the Southern Expressway are advised to take the South Rd exit, not the Marion Rd exit. Eastbound traffic on Sturt Rd is also affected. The Australian Traffic Network's Nick Green said traffic elsewhere across the city was mostly flowing smoothly. He said city bound lane on Philip Highway was building. Commuters coming into the city from the eastern suburbs will have to contend with restrictions on Dequetteville Tce as the set up for Clipsal 500 continues. Old Coach Rd and Port Rd, Aldinga Aldinga Beach Rd, Esplanade, Quinliven Rd and Rowley Rd, Aldinga Beach Bains Rd, Flaxmill Rd, Main South Rd, Sherriffs Rd and States Rd, Morphett Vale Beach Rd, Noarlunga Centre Main South Rd, Noarlunga Downs Victor Harbor Rd, Old Noarlunga Salisbury Hwy and Shepherdson Rd, Parafield Gardens Bolivar Rd and Kings Rd, Paralowie Weatherald Tce, Port Noarlunga South. Addison Rd/Torrens Rd, Cheltenham. Beach Rd/Southern Exp, Hackham West and Morphett Vale. Briens Rd/Grand Junction Rd, Northfield. Brighton Rd/Grantham Rd and Oaklands Rd, Somerton Park. Brighton Rd/Anzac Hwy, Jetty Rd, Melton St and Pier, Glenelg East. Cheltenham Pde/Berkeley St and Buller Tce, Cheltenham. Churchill Rd/Cochrane Tce, Ovingham. Churchill Rd/Dudley Ave and Rose St, Prospect. Grand Junction Rd/Hanson Rd and Prospect Rd, Blair Athol. Greenhill Rd/Anzac Hwy/Fullarton Rd/Glen Osmond Rd, Adelaide. Greenhill Rd/Goodwood Rd, Adelaide and Wayville. Greenhill Rd/Sir Lewis Cohen Ave, Adelaide and Wayville. Hackney Rd/Plane Tree Dr, Hackney. Main North Rd/McIntyre Rd, Salisbury South. Main North Rd/Yorktown Rd, Elizabeth East. Morphett Rd/Bray St and Lawson, Glengowrie. OG Rd/Tregoweth Ct, Klemzig. Oaklands Rd/Park Holme, Somerton Park, Morphettville and Warradale. Port Rd/Pope St, Beverley. Prospect Rd/Kintore Ave, Milner St, Olive St, Prospect. Regency Rd/Princes St, Prospect. Regency Rd/Torrens Rd, Kilkenny. Richmond Rd/Deacon Ave and South Rd, Richmond. South Eastern Freeway/Mt Barker Intg ramp from Adelaide, Mount Barker. Southern Expressway.