9.2 Transverse Markings, Stop/Yield Lines, Pedestrian Crossings & Painted Traffic Islands

9.2 Transverse Markings, Stop/Yield Lines, Pedestrian Crossings & Painted Traffic Islands

While longitudinal markings run parallel to the road centerline, transverse markings are painted across the roadway perpendicular or diagonally to the direction of travel. In terms of SARTSM Volume 1, Regulation 285 and Schedule 1 to the National Road Traffic Regulations — with section 58 of the Act supplying the duty to obey them — transverse markings govern vehicle priority at intersections, protect vulnerable pedestrians at crossing facilities, canalize vehicular movements through complex junctions, and define curbside stopping and parking restrictions.

For a Code 10 / Class C1 / Class C commercial vehicle operator, mastering transverse markings is vital to road safety. A fully laden rigid commercial vehicle carrying up to 16 000 kg Gross Vehicle Mass requires up to four times the stopping distance of an ordinary passenger car. Anticipating transverse markings, compensating for pneumatic air-brake lag, and managing cab-over-engine (COE) visual blind spots prevents fatal intersection overruns and pedestrian collisions.

---

1. RTM1: Stop Line (Regulation 307(a))

An RTM1 Stop Line consists of a continuous, unbroken white line painted transversely across the traffic lane. Its width varies from 300 mm to 500 mm depending on the posted speed limit of the approach. It is paired with an R1 Stop Sign or traffic control light signal.

+-------------------------------------------------------------------------+
|                 RTM1 STOP LINE: STATUTORY MANDATES                      |
+-------------------------------------------------------------------------+
|                                                                         |
|   1. COMPLETE PHYSICAL STANDSTILL                                       |
|   * Absolute cessation of all forward motion (0 km/h)                   |
|   * Rolling stops ("creeping") are criminal offenses                    |
|                                                                         |
|   2. POSITIONING BEHIND THE LINE                                        |
|   * No portion of the front bumper, chassis, or load may cross the line |
|                                                                         |
|   3. CAB-OVER (COE) VISUAL BLIND SPOT TRAP                              |
|   * Pavement directly in front of heavy trucks is hidden for 2-3 metres |
|   * Stop while the white line is still visible through the windshield  |
|                                                                         |
|   4. K53 BRAKING & OBSERVATION SEQUENCE                                 |
|   * Progressive pneumatic air braking -> Clutch down -> Complete stop   |
|   * Apply handbrake -> Select neutral -> Full 360-degree observation    |
|                                                                         |
+-------------------------------------------------------------------------+

The Legal Requirement: Absolute Standstill

• Statutory Obligation: Under Regulation 307(a), which requires a driver to stop in compliance with any direction conveyed by a road traffic sign, the driver approaching an RTM1 stop line must bring the vehicle to an absolute, complete standstill immediately behind the line. The official manual adds that where there is no stop sign, the stop line by itself has the same meaning as a stop sign.
• No Rolling Stops: A "rolling stop"—slowing down to 3 km/h to check for cross-traffic without coming to a complete stop—is a severe offense under the NRTA and results in an immediate failure during the practical K53 driving test.
• Stop Line Overrun: No part of the vehicle, including the front bumper, bullbar, or projecting load overhang, may cross the leading edge of the stop line. In a heavy cab-over-engine (COE) truck, the front bumper is mounted directly beneath or ahead of the driver's feet. If the driver waits until the line is beneath the cab, the front bumper is already intruding into the pedestrian walkway or intersection cross-flow.

Heavy Vehicle Stopping Dynamics & Air-Brake Lag

• Pneumatic Brake Lag: Commercial heavy vehicles use compressed air braking systems. Unlike hydraulic brakes in passenger cars, air brakes experience a mechanical lag of 0.4 to 0.6 seconds between foot-valve depression and brake shoe contact at the wheel hubs.
• Load Shift Prevention: Abrupt, last-second braking at a stop line can cause unrestrained cargo to shift forward violently, crushing the cab bulkhead or shearing freight tie-down straps. Professional drivers initiate progressive deceleration at least 50 to 80 metres before the stop line.

---

2. RTM2: Yield Line & Roundabout Navigation

An RTM2 Yield Line consists of a broken transverse white line painted across the lane, composed of rectangular white blocks (typically 500 mm wide and 1 000 mm long, separated by 500 mm gaps). It is frequently accompanied by a painted inverted yield triangle on the approach lane surface and an R2 yield sign at the roadside.

Legal Rules Governing RTM2

• Priority to Intersecting Traffic: A driver approaching an RTM2 line must give right of way to any vehicle or pedestrian crossing or circulating on the roadway being joined or crossed.
• Conditional Stopping: Unlike an RTM1 stop line, a driver is not legally required to stop if the roadway ahead is completely clear of conflicting traffic. The driver may proceed without stopping, provided speed is controlled and safe.
• Roundabouts (Traffic Circles): At modern roundabouts, RTM2 yield lines are positioned at each entry approach. The driver must yield right of way to all circulating traffic approaching from the right within the circle.

Heavy Vehicle Acceleration and Gap Acceptance

When driving a Code 10 rigid truck carrying 10 tonnes of payload, accelerating from a complete stop requires navigating through multiple low gear ratios (1st, 2nd, 3rd). A heavy truck can take 8 to 12 seconds to enter and clear an intersection. Therefore, heavy truck drivers approaching a yield line must evaluate much larger gaps in cross-traffic than passenger vehicle drivers to avoid forcing approaching vehicles into emergency braking.

---

3. RTM3: Pedestrian Zebra Crossing (Regulation 315)

The RTM3 Pedestrian Zebra Crossing is composed of broad, longitudinal white stripes painted parallel to the roadway alignment, spanning the full width of the carriageway. It designates a statutory pedestrian sanctuary.

+-------------------------------------------------------------------------+
|               RTM3 PEDESTRIAN CROSSING: LIFE-CRITICAL RULES             |
+-------------------------------------------------------------------------+
|                                                                         |
|   1. ABSOLUTE PEDESTRIAN PRIORITY                                       |
|   * Any pedestrian within or stepping into the crossing has total       |
|     right of way over all approaching vehicular traffic                 |
|                                                                         |
|   2. ABSOLUTE PROHIBITION ON OVERTAKING                                 |
|   * DO NOT OVERTAKE ANY VEHICLE that has stopped or slowed down at a   |
|     pedestrian crossing. This is a severe criminal offense              |
|                                                                         |
|   3. HEAVY TRUCK SIGHTLINE DANGERS                                      |
|   * A passenger car stopped at a crossing creates a massive blind spot. |
|     A child walking past the car cannot be seen from the cab            |
|                                                                         |
+-------------------------------------------------------------------------+

Statutory Mandates

1. Absolute Pedestrian Priority: Under Regulation 315(2), every driver approaching an RTM3 crossing must yield right of way to any pedestrian who is entering or already crossing the roadway within the marked area.
2. The Absolute Overtaking Ban (Regulation 315(4)): No driver shall overtake another vehicle that has slowed down or stopped at a pedestrian crossing. Passing a vehicle stopped at a zebra crossing is one of the most hazardous traffic offenses in South Africa and a high-frequency exam topic. The stopped vehicle inevitably obscures pedestrians crossing from the opposite side.
3. Prohibition on Stopping Across Crossing: In queuing or congested traffic, a driver must never allow their vehicle to stop on top of an RTM3 pedestrian marking. A heavy truck driver must hold back behind the advance line until there is sufficient space on the far side of the intersection to clear the crossing entirely.

---

4. RM5: Painted Traffic Islands & Canalizing Chevron Markings

A Painted Traffic Island (RM5) consists of a roadway surface enclosed by solid white canalizing boundary lines, with the interior filled with diagonal white stripes or chevrons (herringbone pattern). Painted islands are deployed at highway bifurcations, junction channelizations, and freeway exit ramps.

Statutory Prohibitions

• Non-Traversable Reservation: The official manual's rule for the RM5 painted island is to “drive in such a way that you do not stop, park or drive over the island, unless on the orders of a traffic or police officer, to avoid a collision or in an emergency”, so a painted traffic island is an exclusive non-traversable reservation. Driving over, straddling, stopping on, or parking on a painted traffic island is strictly prohibited.
• Shortcutting and Queuing Bans: Drivers are barred from using a painted island to bypass stationary traffic, queue for right turns, or execute shortcuts across intersections.

The Heavy Truck Off-Tracking Trap on Painted Islands

When negotiating tight 90-degree right turns at channelized urban intersections, the rear tandem axles of a heavy rigid vehicle cut inward (swept path). Unskilled drivers often allow the rear wheels to roll directly across the painted island, crushing raised kerbing or clipping traffic signal poles. Drivers must pull forward well into the intersection before turning the steering wheel, ensuring the rear wheels clear the island markings.

---

5. Kerb Markings: Red Kerb (RM12) vs. Yellow Kerb (RM13)

Kerb markings are painted directly onto the vertical face and upper surface of concrete road kerbs to regulate stopping and parking in urban and industrial loading environments.

[!WARNING] Do not confuse these with the RTM codes. In the SADC/SA Road Traffic Signs Manual the kerb markings are RM12 (No Stopping Line) and RM13 (No Parking Line). RTM3 is the pedestrian crossing lines marking and RTM4 is the block pedestrian crossing marking — different family, different meaning. Answering a kerb-colour question with an RTM code is a straightforward mark lost.

1. RM12 Solid Red Kerb Marking (No Stopping)

• Absolute Prohibition: A solid red line on the kerb establishes an absolute ban on stopping.
• Scope: No motor vehicle may stop alongside a red kerb for any reason, even if the engine remains running, the driver remains seated behind the wheel, and the duration is less than 30 seconds.
• Exceptions: The only legal justifications for stopping beside an RM12 kerb are complying with a traffic signal, responding to an emergency vehicle, avoiding a collision, or obeying a lawful instruction from a uniformed traffic officer — the same narrow list Regulation 304 opens with.

2. RM13 Solid Yellow Kerb Marking (No Parking)

• Conditional Parking Ban: A solid yellow line on the kerb designates a No Parking zone.
• Commercial Loading Exception: In terms of the NRTA, a vehicle may stop alongside a yellow kerb for the specific, continuous purpose of:
  • Picking up or setting down passengers; OR
  • Actively loading or offloading commercial freight, goods, or merchandise.
• Strict Limitation: The loading or passenger movement must be active and ongoing. If the driver leaves the vehicle to take a lunch break, conduct administrative errands, or wait for future orders, the vehicle is legally parked and subject to an immediate traffic citation or municipal impoundment.