We are so rich now that throwing up a number like $1b seems nothing. And what can $1b buy? A signalling system for the MRT to get the trains travel faster and to move people faster. That's all.
What can $1b do to SBS Transit? For one, they have ordered 600 brand new and 'all environmentally friendly and Euro V compliant' buses at a total cost of $268m! $1b could actually buy 2000 of such modern buses for the road.
The signalling system better be worth the money.