We thank Lucy Marie Armstrong for her feedback (Electric wheelchair gets stuck when boarding trains; March 13).

To minimise the space between trains and platforms, the Land Transport Authority has installed gap fillers along platform edges at all above-ground stations of the North-South and East-West Lines, as well as on the new trains on the North-East Line and the Circle Line.

However, these platform gaps cannot be completely eliminated, as a minimum physical clearance is needed to allow the train to approach the station safely.

The train floor height may also vary slightly over time, and is set at a level to cater for various vehicular tolerances, such as differences in train wheels, rail wear and passenger loading.

We encourage passengers who require assistance with boarding and alighting to approach station staff, who will always help.

We would also like to ask commuters to lend a hand or approach the station staff whenever they see another commuter in need.

Mrs Armstrong's feedback has helped deepen our understanding of the challenges faced by persons travelling on mobility aids and we will continue to explore more ways to improve the accessibility of our public transport.

Yeo Teck Guan
Group Director
Public Transport
Land Transport Authority