Among many peoples’ pet peeves in traffic would probably be the propensity for lane changing among many drivers and riders. This is especially true for wide multi-lane roads like Commonwealth Ave., Marcos Highway and EDSA. While it can be an understandable behaviour for free flowing traffic along long stretches where weaving can be executed safely, lane changes can be quite risky at intersections and may instantly lead to crashes. These are likely the bases for the swerving violations that the MMDA and other traffic enforcers became notorious for issuing for a time.
We chanced upon a scene at the Commonwealth Ave.-Mindanao Ave. intersection in Novaliches where a car seemed to have attempted to cut in front of a bus in order to make a turn but got hit by the bus. From the angle of the collision, it appears that the driver of the car likely maneuvered for a U-turn and made the critical assumption that he could beat the bus for the turn. It was obvious that the bus was in the right position while the car was not. This is often the case for drivers who do not care for positioning themselves along the correct lanes at intersections and seem to rely on their guile to get ahead of others. Such drivers might just be the same ones who would likely do counter-flows also to get ahead of others queued along the right traffic lanes.
White car attempts to make a U-turn right in front of a bus and gets hit by the bus whose driver likely did not notice the white car sneaking in front of the vehicle.
Lane discipline becomes more important with the revival of traffic signals all around Metro Manila. In addition, it is also important for the appropriate lane markings to be placed at intersection approaches. Such markings are supposed to guide drivers where they should position themselves so that they will not block traffic going in another direction. These can also aid in the enforcement of lane discipline as vehicles on the wrong lanes can be apprehended. This was the case in Cebu City in the 1990s when the city adopted the SCATS traffic signal system, which employed detectors embedded on the pavement along the approaches to intersections. These detectors helped determine whether there is demand for a particular movement (left, through or right) and so requires lane discipline for the system to work effectively. –
One thing to remember is that the MMDA itself promoted (inadvertently) lane weaving due to their U-turns. Some U-turn slots call for crossing 2-3 lanes of traffic in less than 250 meters.