TSS vehicles, pictured below, are distinctive with their prominent VicRoads logo and branding. The vehicles have reflective checkerboard markings for high visibility and will display magenta coloured lighting when required for use in their enforcement and overdimensional escort role.
TSS officers are authorised to carry out their duties under the provisions of the Road Safety Act 1986 and have a similar role to Victoria Police on Victorian roads. For road users this means that if instructed to do so, you must pull over and obey their directions. Whilst heavy vehicle compliance is the primary role of TSS, officers can issue infringement notices to light motor vehicle drivers if required.
The Road Safety Act authorises TSS officers to fine offending drivers. While their main focus is on heavy vehicle regulations, TSS officers can and will also exercise judgement in issuing fines for offences by any road user.

TSS officers intercept heavy vehicles to check them primarily for compliance with weight, load security, dimensions, roadworthiness, registration standards and other safety related issues. Drivers will also be checked for licence category and to make sure they are compliant with heavy vehicle work and rest requirements.Road safety operations are conducted regularly within Victoria, particularly at high road usage times such as major holidays. TSS work with Victoria Police and the TAC in their efforts to minimise fatalities and road trauma on the Victorian road network. While their key focus during those operations is on heavy vehicle compliance, TSS assists Victoria Police by exercising judgement in road safety compliance for all road users.

All vehicles, when requested to, must pull over for a TSS officer. TSS have the same interception powers on Victorian roads as Victoria Police, therefore you must follow their direct instructions.