Johor Bahru Inner Ring Road - Wikipedia Johor Bahru Inner Ring Road, (JBIRR) or Jalan Lingkaran Dalam, Federal Route 188, is a multi-lane federal ring road highway that circles the Johor Bahru Central District in Johor, Malaysia.[1] The 4.6-kilometre (2.9 mi) highway was the most expensive road infrastructure project per kil ...