Signalised pedestrian crossings are used to facilitate the time-sharing of road space between motorists and pedestrians so that pedestrians can cross the road safely. Each of these two groups of users is allocated the right-of-way alternatively with the use of traffic signals. The amount of time allocated to motorists and pedestrians is based on the principle of balancing their conflicting demands. The demand for vehicular movement is detected through the sensors placed on the road pavement.
Pedestrians register their intent to cross the road by activating the push-button on the traffic light pole. The activation of the push button tells the system that someone is waiting to cross the road, and traffic will then be stopped to allow this. Pedestrians can proceed to cross the road when the green man comes on.
It's a Balance between Safety & Efficiency
The Land Transport Authority receives more than twenty requests for new signalised pedestrian crossings each month. LTA has to balance the needs of pedestrians and motorists when reviewing these requests. That's because more signalised pedestrian crossings means that motorists would have to stop more often, thereby reducing the efficiency of our road network. LTA has to consider factors such as the pedestrian volume, road design, the site and its constraints before deciding to install a signalised pedestrian crossing.