the highest in East Java, that is in July 2017 with inflation of 0.30%. Transport Road There are 2,960 roads in Malang with a total length of . This count does not include provincial and state roads. In addition to being located at Indonesian National Route 23, which connects it to Gempol and Kepanjen, Malang is also connected to provincial roads linking regencies and cities in East Java. To increase connectivity in East Java, toll roads are being built, one of them is the Pandaan-Malang Toll Road. This toll road will end in Madyopuro, Kedungkandang. Now the toll has entered the construction phase. On 28 May 2006, a blow-out occurred during drilling for an exploration of natural gas in Porong, Sidoarjo Regency. The blow-out initially produced of mud flow per day. 18 months after the incident, the mudflow is estimated to be per day. This ongoing mudflow has forced the closure of the Porong-Gempol toll road in East Java, which effectively cut off the transport line from Surabaya to Malang. In mid-2015, a new highway — Gempol-Pandaan Toll Road — opened for the public to ease transport from Malang to Surabaya and Pasuruan to Surabaya, vice versa. The primary public transportation are microvans (most of them are Suzuki Carry), painted blue for legal public use. Those microvans are called Angkot both officially and casually (from Angkutan = transportation and Kota = city) but some locals prefer to call it by the name Mikrolet. They are operated privately and cheap, around IDR 4,000 each boarding, but the angkots are usually cramped. The Department of Transportation of Malang operates angkots and school buses. Both services serve both the city centre and the suburbs. There are now 25 angkot routes in the city. The school buses began operating on 29 December 2014 and there are now six school buses with six routes. Malang has a large intercity bus terminal, Arjosari, located in Blimbing, North Malang. Gojek and Grab operate in Malang. A protest was held by angkot and taxi drivers opposing these companies on 20 February 2017, leading Gojek to close its office in Malang temporarily. According to INRIX, Malang is one of the most congested cities in the world with total time spent in a year in congestion of 39.3 hours (20% of total time). According to a Brawijaya University survey, 46.2% of city residents consider congestion in the city to be