Expressways

AYE = Ayer Rajah Expressway
BKE = Bukit Timah Expressway
CTE = Central Expressway
ECP = East Coast Parkway
KJE = Kranji Expressway
KPE = Kallang-Paya Lebar Expressway
PIE = Pan-Island Expressway
SLE - Seletar Expressway
TPE = Tampines Expressway

Payment/Taxes

COE = Certificate of Entitlement
ERP = Electronic Road Pricing

Parking

URA = Urban Redevelopment Authority
HDB = Housing Development Board
MSCP = Multi-Storey Car Park