SINGAPORE - There will be more certificates of entitlement available for cars during the August-October quota period.

However the overall supply for vehicles during this period will shrink by six per cent to 3,777 from the previous monthly supply.

This is largely on the back of fewer COEs for commercial vehicles and motorcycles.

The supply of car certificates is expected to continue expanding gradually over the next two to three years.

The increase has been triggered by more cars being taken off the road, as those registered during the boom years a decade ago approach the end of their statutory 10-year lifespan. But in the last three months, there were fewer motorbikes and commercial vehicles scrapped.

COE supply is determined largely by the vehicles scrapped in the preceding months.

In total, 3,777 COEs will be available for bidding each month from August, the Land Transport Authority (LTA) said Wednesday.

Of this total, the monthly supply for Category A cars (up to 1,600cc and 130bp) rises to 1,143, from 1,011, while the quota for Category B cars (above 1,600cc or 130bhp) goes up to 1,010, from 966.

The supply of Open COEs, which can be used for any vehicle type but ends up mainly for bigger cars, shrinks to 478, from 586.

In total, cars will have 2,631 certificates available, up from 2,563.

Commercial vehicle COE supply will shrink from 770 to 515 per month, while motorbike COE supply will drop to 631 per month, from 686.