7.4 Speed Zones, School Buses, Cyclists and Emergency Vehicles

Identify the limit applying to this part of the road

A highway limit is not a permanent entitlement for the whole trip. Read speed signs, area limits, school zones, shared zones and temporary roadworks controls. A limit can change at a sign before the physical hazard looks obvious. Reduce speed in time to enter the lower zone lawfully; braking only after passing the sign is too late.

Where no different applicable limit is signed, Tasmania’s defaults are 50 km/h in a built-up area, 100 km/h on other sealed roads and 80 km/h on other unsealed roads. Those are legal ceilings, not recommendations for every bend or surface. Gravel, dust, corrugations and restricted visibility may require a much lower safe speed.

School and shared zones

A school-zone sign specifies the limit and its operating times, days or conditions. Read the sign rather than assume one universal schedule. Flashing signs can draw attention, but nearby children remain a hazard outside the signed period. Slow further when their movement or visibility makes the legal maximum unsafe.

A shared zone combines vehicles and pedestrians at a low signed speed. Give way to pedestrians throughout the zone. A commercial delivery does not confer priority over someone walking. Plan a safe loading position and avoid reversing through an occupied shared area without suitable controls.

School buses

Road rule 374 limits a driver to 40 km/h within 50 m of a bus on the road displaying both the school-bus warning sign and an illuminated or flashing school-bus warning light. Do not substitute the ordinary school-zone figure or a claimed 50 km/h bus rule. The bus warning is a distinct rule with its own conditions.

Children may cross from behind the bus or run toward it. Approach with a stopping margin, watch both sides and do not overtake aggressively. The bus can hide a child from a truck’s high cab until the child is very close. Treat the warning as a cue for active observation, not just a numerical speed check.

Passing cyclists

Road rule 144A requires at least 1 m lateral clearance when the applicable speed limit is not more than 60 km/h, and 1.5 m when it is above 60 km/h. The threshold uses the applicable speed limit, not the driver’s choice to crawl past in a higher-speed zone. Measure between the relevant outermost points, including vehicle projections and the bicycle, rider or trailer as defined.

For a truck, include mirrors, load and the trailer’s path. A cab that clears the rider by the minimum can be followed by a trailer that moves closer. Wind and uneven surfaces can make the rider’s position change. Allow more than the minimum where necessary for safety, reduce speed and wait until there is room to pass fully.

The rules allow crossing certain lines to pass a bicycle only under the stated safe conditions. They do not permit entering unseen oncoming traffic. If the legal and safe clearance cannot be provided, stay behind at a safe gap until a suitable opportunity exists. Do not squeeze through because another driver is waiting behind.

Emergency and roadside vehicles

Give way to police, emergency, enforcement and escort vehicles displaying the relevant lights or sounding an alarm under rule 79. Respond predictably, slow and stop if necessary, and do not create a new hazard by abruptly entering a blocked intersection or an unsafe shoulder. Observe other traffic and the path the responding vehicle needs.

Rule 79A concerns stationary or slow-moving police, emergency, enforcement, roadside-assistance and escort vehicles displaying the specified flashing lights or sounding an alarm. Approach at a speed allowing a safe stop, give way to relevant workers on foot nearby, and generally pass at no more than 40 km/h. This includes qualifying roadside-assistance yellow lights; it is not a blanket rule for every vehicle with an amber beacon.

On a road with a speed limit greater than 80 km/h, the rule provides a safety exception where there is insufficient time to reduce safely to 40 when the vehicle is first noticed. The driver must still reduce speed as far as safe. A dividing strip can also affect applicability as the rule states. These are precise exceptions, not permission to ignore a roadside scene at highway speed.

Key decisions

Read the actual zone, protect school-bus users and cyclists, and slow predictably for roadside incidents. Apply exceptions only where their stated conditions are met.

Official sources

Road Rules 2019, rules 25, 79–79A, 144A and 374; official roadside slowdown explanation. Sources checked 10 October 2026.