West of Loop 1604, the road changes. US 90, FM 471, FM 1957, and the farm-to-market roads around Castroville, La Coste, and Hondo carry tractors, cotton modules, hay trailers, and implements that may be moving 15–25 mph with a vehicle doing 70 coming up behind them.
This is everyday Medina County driving — and it is one of the skills city-trained teens are least prepared for. A new driver who only practiced on Culebra or I-10 can panic when a wide header appears over a rise.
How to recognize slow-moving equipment
- The orange-red SMV (slow-moving vehicle) triangle on the back is required for equipment designed to travel 25 mph or less.
- Flashing amber lights, oversized mirrors, and a cloud of dust or chaff are early clues.
- At dusk the triangle and lights can be the only warning you get before the shape of the machine is clear.
Passing rules that keep people alive
- Slow down early. Do not close the gap at highway speed and then decide.
- Pass only in a marked passing zone with a long, clear sight line. Blind hills and curves on US 90 west of Castroville are not the place to gamble.
- Account for width. Some implements are wider than a lane. You may need the entire left side of the road.
- Do not linger in the no-zones beside a tractor. The operator’s view to the right and rear is limited.
- After you pass, do not cut back until you see the entire machine in your rear-view mirror.
- Never pass on the shoulder. Soft caliche and hidden driveways make that a rollover risk.
- If you cannot pass safely, drop back and wait. Thirty extra seconds is not a failure.
When equipment turns
Farm equipment often turns into unmarked field drives. A left-turn signal on a tractor can mean a wide swing. Stay back until the turn is complete. Honking rarely helps; the operator may not hear you over the engine.
If your teen will commute on Highway 90 or FM 471, ask us to include rural two-lane practice in their behind-the-wheel hours. City miles alone do not cover this.
Safer Roads with Rhodes!