About Us

Expanded Installation of ATS-P and ATS-Ps Devices, and Measures to Prevent Excessive Speed through Curves

East Japan Railway Company

June 29, 2005

  • East Japan Railway Company (JR East) has regularly been installing ATS-P and ATS-Ps devices as a measure to prevent train collisions.
  • JR East plans to increase the number of ATS-P and ATS-Ps devices, in order to further increase railway safety.
  • Measures will also be taken to prevent excessive speed through curves, and at turnouts and terminal stations.
  • ATS-P and ATS-Ps devices constantly check speed levels, and JR East intends to continue expanding the areas where these devices are installed.

[Expanded Installation of ATS-P and ATS-Ps Devices]

  • JR East has spent approximately 91 billion yen since 1988 on the installation of ATS-P and ATS-Ps devices as a measure to prevent train collisions.
  • The ATS-P device installation area will be extended to 20 more railway sections, totaling about 850 km, including several sections in the Tokyo metropolitan area. Installation will be completed by fiscal 2012, and will bring the ATS-P installation rate to approximately 42% of the JR East network.
  • JR East has been installing ATS-Ps-type safety devices in the Sendai and Niigata urban areas since 2000. By fiscal 2011, these devices will be installed at an additional 23 stations; their selection is based on the number of trains, complexity of the route layout, and whether they are terminal stations. As part of this work, more rolling stock will receive ATS-Ps equipment.

[Measures to Prevent Excessive Speed through Curves]

  • The following measures will be taken at 820 locations, including 63 that require immediate action under criteria established by the Ministry of Land, Infrastructure and Transport (MLIT) to prevent excessive speed through curves.
    (1) On sections already equipped with ATS-P and ATS-Ps devices, wayside coils for checking speed will be installed at 292 locations by the end of fiscal 2006.
    (2) On sections that are scheduled to receive ATS-P devices, wayside coils for checking speed will be installed at 148 locations by the end of fiscal 2009.
    (3) On other sections, in addition to equipping rolling stock with ATS-Ps devices, ATS-Ps wayside coils for checking speed will be installed in 380 locations by the end of fiscal 2009.
    The 63 locations that require immediate action under the MLIT criteria will receive this equipment during fiscal 2005.

[Measures to Prevent Excessive Speed at Turnouts and Route Terminals]

  • By the end of fiscal 2006, wayside coils for checking speed will be installed at turnouts that do not yet have these devices at 26 stations in railway sections that already have ATS-P and ATS-Ps equipment. This will also be done at 170 stations in other railway sections by the end of fiscal 2012 in coordination with the ATS-P and ATS-Ps expansion.
  • At terminal stations, ATS-SN wayside coils for checking speed will be installed during 2005 in two locations that are similar to the site where the Tosa-Kuroshio Railway accident occurred, in accordance with MLIT criteria. Wayside coils for checking speed will be installed at these two locations and 24 other stations, in coordination with the ATS-P and ATS-Ps expansion.
    The construction cost for these measures is expected to total approximately 26.5 billion yen.

ATS Installation Plan

ATS Installation Plan

Expanded ATS-P installation areas

Expanded ATS-P installation areas

Expanded ATS-Ps installation areas

Expanded ATS-Ps installation areas
Back