Speed Limit in Sri Lanka, Finder by Vehicle & Road

Sri Lanka's speed limits are not a single number. They depend on both the road type and the vehicle class. This finder is a lookup against the national matrix set by two authorities, so the answer is a direct legal figure rather than an estimate.

The built-up and non-built-up limits come from Extraordinary Gazette No. 1763/26 (22 June 2012), issued under the Motor Traffic Act. In a built-up area (a town, where buildings line the road) the cap is 50 km/h for cars, motorcycles, vans, buses and lorries, and 40 km/h for three-wheelers (motor tricycles). On a non-built-up open road the cap rises to 70 km/h for all light vehicles, while motor coaches (buses) and goods vehicles (lorries) are held to 60 km/h because of their longer stopping distance. The limit switches at the town-boundary signs.

The expressway limits come from the RDA Expressway Operation & Maintenance rules. On access-controlled expressways such as the E01 Southern Expressway, light vehicles may do up to 100 km/h with a 60 km/h minimum, and buses and lorries up to 80 km/h. Interchange ramps are held to 60 km/h. Crucially, motorcycles and three-wheelers are prohibited from expressways entirely, the tool shows a clear “not permitted” state for those combinations rather than a number.

When you enter your recorded speed, the check is a simple comparison: over-by = your speed − limit when you exceed the maximum, or a below-minimum warning when you drop under an expressway's 60 km/h floor. The tool does not calculate the fine, that is delegated to the Traffic Fine Calculator so each tool does one job well. Every cell of the matrix is stored twice in the code (an explicit table and a first-principles rule derivation) and the two are cross-checked on load, so the “Gazette + RDA verified” badge only shows when all 18 values agree.

• Kumarage et al., “Determination of Speed Limits for National Highways in Sri Lanka”, Engineer: Journal of the IESL, Vol. LV No. 03 (2022)
• Department of Government Printing: Extraordinary Gazettes (Gazette No. 1763/26, 22 June 2012)
• Road Development Authority: Expressway operation & user rules
• SriLankaLaw.lk: Motor Traffic Act and regulations (mirror)

The speed-limit matrix on this page was last cross-checked against Extraordinary Gazette No. 1763/26 (22 June 2012) and the RDA Expressway Operation & Maintenance rules on 2026-07-09. Limits change only by gazette amendment or RDA regulation. Posted signs always override these national defaults.