you can complain here:
http://talk2lta.lta.gov.sg/AskLTAContentController?action=Public.AskLTA.CreateFeedback
fill in ur details and select "Request for traffic lights,
change in traffic light timings, yellow boxes at junctions, red
zones for schools, pedestrian crossings, road signs, speed
regulating strips, road humps, overhead bridges, centre dividers,
footpath railings, additional slip roads, wider roads"
under "On Traffic Matters" and then proceed to
write ur complaint.