DUST LAYER ACCUMULATION DURING PROLONGED DRY PERIODS IN CATALKOY

Location: Çatalköy

During extended dry periods, particularly in late summer and early autumn, Catalkoy’s road surface undergoes a gradual but often unnoticed transformation. The exposure does not arise from visible debris or construction material. It develops from fine particulate accumulation.

Dust in Catalkoy originates from multiple sources. Dry hillside soil, light construction activity, roadside erosion and agricultural movement in nearby areas all contribute microscopic particles to the air. Over weeks without rainfall, these particles settle uniformly across asphalt surfaces.

The layer remains nearly invisible.

Under direct sunlight, the road appears unchanged. Under overcast skies, the surface may even seem cleaner than during wet months. Yet friction characteristics shift subtly.

A common scenario unfolds during late afternoon movement along the main east–west corridor. A driver approaches a routine braking point near a feeder road or slight bend. Brake pressure is applied according to habitual timing.

Stopping distance extends fractionally.

The difference is small, but repetition increases exposure. Following vehicles compress slightly during sequential braking events.

Unlike the first-rain scenario, no moisture activates the dust layer. Instead, the dry particles function as micro-ball bearings between tire and asphalt. Grip remains present but marginally reduced.

Upper Catalkoy segments may accumulate more dust due to proximity to hillside terrain. Vehicles descending from these areas carry additional particulate onto the lower corridor.

Between 14:00 and 17:00, when thermal currents are strongest, suspended dust can redistribute across the roadway. Fine particles settle more heavily near the inside of curves and near frequently used braking zones.

Another variation appears during sudden acceleration from side roads. Tires may slip slightly before full traction engages, especially in vehicles with worn tread patterns.

The exposure intensifies at night.

Under artificial lighting, the dusty surface may reflect headlights more diffusely. Visual cues about surface texture become less precise. Drivers perceive the road as stable but cannot visually detect reduced friction.

Importantly, this is not sand drift or visible gravel displacement. It is a uniform, thin coating developed gradually over time.

When the first significant rainfall eventually arrives, the dust layer mixes with water and temporarily amplifies slipperiness before washing away.

Until that rainfall occurs, Catalkoy’s asphalt during prolonged dry periods behaves differently from its post-rain state.

Drivers rarely attribute slight braking extension to dust accumulation. They attribute it to traffic variability.

Yet during extended dry cycles, the baseline friction coefficient shifts downward slightly.

The geometry remains constant. The traffic volume remains familiar. The surface chemistry changes invisibly.

Over time, repeated minor braking compression increases rear-contact probability in moderate flow conditions.

Once rainfall resets the surface, grip returns to expected norms.

But during prolonged dry intervals in Catalkoy, the road carries more than vehicles.

It carries residue.

And residue reshapes timing more than perception acknowledges.