That’s actually a title of a paper or article I co-wrote before. At the time, which was over a decade ago, we were revisiting certain travel demand management (TDM) measures being implemented in Metro Manila. We already concluded that the effectiveness of the number coding scheme has been reduced mainly as people bought a second, third or more vehicles to be able to use any vehicle on coding days.

Since then, coding’s effectiveness continued to be eroded by a combination of increasing vehicle ownership (including more vehicles operating as ride hails) and the rapid increase of motorcycles.

More recently, government decided to give push for electric and hybrid vehicles. The MMDA made these coding exempt, which perhaps is an example of instituting a policy with unintended consequences. I say unintended here because the agency seems oblivious to the fact that people will likely get that second, third or more vehicle. And that will be an EV or hybrid. Manufacturers are already marketing these as ‘coding exempt’ and they are making a good sales pitch here.

Maybe it’s time to revisit coding and re formulate it? But then coding wasn’t supposed to be sustained as long as it has. Government should be more aggressive and decisive for public transport in order to retain and increase mode shares that have also been reduced by more private vehicle and motorcycle use.

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