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4G Measurement Survey Results for Q4 2017

Tunnel Service Coverage

This indicator measures the service coverage for the 4G cellular mobile network within road and MRT tunnels. Tunnel service coverage measures the percentage of data points collected in a tunnel from a 4G cellular mobile network that achieves a minimum signal strength of at least -109dBm. The tunnel areas surveyed by IMDA include all road and MRT tunnels in Singapore. In order to better reflect end users' experience, IMDA uses mobile phones to collect the signal strength data points.

IMDA’s Performance Survey Period - Q4 2017 M1 Singtel Mobile StarHub Mobile
Road Tunnels
Central Expressway 100% 99.47% 100%
Fort Canning 100% 100% 100%
Kallang-Paya Lebar Expressway 100% 100% 99.84%
Marina Coastal Expressway Rollout in progress Rollout in progress Rollout in progress
Woodsville 100% 100% 100%
MRT Tunnels
Changi Airport Line 84.72% 89.12% 80.07%
Circle Line 99.97% 100% 99.83%
Downtown Line 99.77% 99.93% 99.78%
East-West Line 99.53% 99.81% 99.18%
North East Line 99.31% 99.90% 99.56%
North-South Line 99.80% 99.98% 99.64%

Note 1: For road and/or MRT tunnels without a published result, it means that the respective mobile operator has not completed its 4G service deployment at the particular road and/or MRT tunnel.

Note 2: End users’ individual experience may differ due to different models of handset used, handset settings, number of users in the vicinity, etc. The tunnel service coverage results are based on IMDA’s coverage performance surveys.