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The Expressway Monitoring and Advisory System (Chinese: 电子监控与信息系统), also known by its acronym of EMAS, is a computerised system that is used to monitor traffic on Singapore's expressways. EMAS enables Land Transport Authority (LTA) personnel to detect accidents and respond to them more quickly. In addition, it notifies motorists of adverse traffic conditions. == History == The contract for the construction of EMAS was awarded by the LTA to Singapore Technologies Electronics in December 1996. The first phase, implemented only on the Central Expressway, was launched officially on 21 March 1998 by then Minister of State for Communications, John Chen. In addition, tunnels were originally used by General Electric between 1991 and 1999. The system was extended to every expressways after the trial, in 2000: *10 November 1999: Ayer Rajah Expressway (Keppel Road - Clementi) *End of 2000: Pan Island Expressway, East Coast Parkway, Clementi-Tuas stretch of the AYE *Mid-2001: Bukit Timah Expressway, Kranji Expressway, Seletar Expressway, Tampines Expressway Separately, the checkpoints utilized EMAS signboards through General Electric and which is located at - *Turf Club Avenue (towards BKE) (in 1 January 2004 ) *Mandai Road (towards BKE) (in 1 January 2004 ) *Woodlands Road (near to Kranji MRT) (in 1 January 2004 ) *SLE (Woodlands Avenue 2 - BKE) (over to LTA and removed in 2014 ) *BKE (Bukit Panjang Road - KJE) (over to LTA and removed in 2014 ) *BKE (KJE - Mandai Road) (over to LTA and removed in 2014 ) *BKE (Mandai Road - Turf Club Avenue) (over to LTA and removed in 2014 ) *BKE (Turf Club Avenue - Woodlands Road) (over to LTA and removed in 2014 ) *AYE (Pioneer Road - Benoi Road) (in 2006 ) *AYE (Exit 22 - Exit 24) (in 2013 ) *PIE (near to KJE) (during the PIE Upgrading ) *PIE (Exit 41) (during the PIE Upgrading ) The upgrading of EMAS signages was announced in September 2013. It will be rolled out to Central Expressway (both blue screens and tunnels), East Coast Parkway, and Bukit Timah Expressway/Seletar Expressway that is near to the Woodlands Checkpoint, which is completed on October 2014. The second phase will be rolled out to Ayer Rajah Expressway and Kranji Expressway. The third phase will be rolled out to Bukit Timah Expressway. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Expressway Monitoring and Advisory System」の詳細全文を読む スポンサード リンク
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