What should motor vehicles do on roads without traffic signs or markings?

[McVincent]

Motor vehicles should drive slowly and observe surrounding vehicles on roads without traffic signs or markings. The following are relevant regulations regarding motor vehicle operation: 1. Road division: When there are two or more motor vehicle lanes in the same direction, the left lane is the fast lane and the right lane is the slow lane. Vehicles in the fast lane should maintain the designated speed; those unable to reach the required speed must use the slow lane. Motorcycles should use the rightmost lane. Where traffic signs indicate speed limits, drivers must comply with posted speed limits. Vehicles in the slow lane may temporarily use the fast lane when overtaking. Lane-changing vehicles must not affect normal traffic flow in adjacent lanes. 2. Speed limits: Motor vehicles must not exceed posted speed limits. On roads without speed limit signs/markings, maximum speeds are: 30 km/h for urban roads without centerlines (40 km/h for highways); 50 km/h for urban roads with single-lane carriageways (70 km/h for highways).