Question

Explain these different forms of phasing: •   Leading right turn •   Lagging right turn •   Leading-through-lagging •   Split approach •   Diamond overlap

True or false: all traffic facing a green circle display has right of way

True or false: all traffic turning in the direction of a green arrow has right of way

Explain the yellow trap (also known as the right turn trap)

Answer 1

​​​​​​Leading Right Turn : It is a sequence in which oncoming through the green light is next after the green right turn arrow is being pointed.

Lagging right Turn : Lagging right turn phase would start after their coordinated through phases and both of them would avoid the right turn phases end at the same time of turning.

Leading through lagging : Leading is a difficult indicator to measure but it is dynamic in nature so, while using the leading technique as it is dynamic and better in nature with the help of lagging measurements as they are easy is known as leading through lagging phase.

Split Approach : Split approach is a Methods in which two phases are being separated as a single phase is not able to control the traffic and by help of split approach left and right turns are maintained simultaneously with the leading and lagging phases one by one.

Diamond Overlap : A diamond overlap is 4-7 different phases depending on the number of side street faces. But the thing is that no emergency phase is being provided in diamond overlap phase.

(i): False. As the green circle will only give permission to go, not for the right of way. It is only for going on the same paths.

(ii): True. The green Arrow permits for the right of way as the land piece is being changed with the help of green arrows.

Yellow Trap : Yellow traps are also known as eight turn traps. It is somehow a dangerous condition in traffic flow through the traffic light relating to permissible left turns. Possibility of accidents are also increased as the light assume the opposite direction faces the colour display and due to that the oncoming traffic will stop.