What are ERP gantries for?



http://www.asiaone.com/Motoring/Drivers/Story/A1Story20081103-98048.html

Quote:
In response, a Land Transport Authority (LTA) spokesman said that the gantry
is not meant to specifically discourage those travelling from Simei to Paya
Lebar.

Unquote:
"All gantries are meant for the purse of Temasek and GICs"??


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