Summary

22 items · 45–90 minutes of preparation time before departure

Why Desert Roads Demand a Different Kind of Preparation

Driving through the Mojave, the Great Basin, or across the Colorado Plateau is one of the great American road trip experiences. But those iconic, wide-open stretches between Las Vegas and Death Valley, or across central Utah and eastern Oregon, are not ordinary commutes. Services — gas, water, phone signal, medical care — can be scarce for dozens of miles at a time.

The environment is genuinely extreme: summer temperatures regularly exceed 110°F (43°C) on the pavement, and engine stress, tyre failures, and human dehydration can escalate quickly when you're far from help. The geology that makes the Southwest so visually stunning also means limited shade, minimal water sources, and terrain that offers no shelter from the sun.

This checklist is designed to help you prepare systematically — not to discourage you from going, but to make sure you arrive. Work through it the day before departure, and use the pre-trip vehicle walk-around checklist as a final confirmation the morning you leave.

Vehicle Preparation

Check tyre pressure and tread depth — heat causes significant pressure fluctuation, and worn tyres are at elevated risk of blowout on hot asphalt. Must
Inspect your coolant level and ensure the radiator is in good condition; overheating is the leading cause of desert breakdowns. Must
Verify your oil level and look for leaks under the vehicle before departure. Must
Confirm your spare tyre is properly inflated and that you have a working jack and lug wrench. Must
Test your air conditioning system — while not strictly required, a failed AC unit in extreme heat significantly increases health risk. Should
Carry a basic roadside emergency kit including jumper cables, a reflective triangle or flares, and a torch. Should

Water and Supplies

Pack a minimum of one gallon of drinking water per person per day, plus extra for the vehicle radiator in a sealed container. Must
Bring high-calorie, heat-stable food (nuts, energy bars, dried fruit) that won't spoil in a hot car. Must
Pack sun protection: SPF 30+ sunscreen, sunglasses with UV protection, and a wide-brimmed hat. Should
Include a basic first aid kit with electrolyte packets, blister care, and any personal medications in a clearly labelled bag. Should

Navigation and Communication

Download offline maps for your entire route before leaving — do not rely on cell service for navigation in remote desert areas. Must
Identify gas stations, towns, and ranger stations along your route and note approximate mileage between each. Must
Share your detailed route — including alternate roads — and expected arrival time with a trusted contact before you depart. Must
Consider renting or purchasing a satellite communicator (such as a personal locator beacon) for routes with extended dead zones. Should
Check National Weather Service forecasts and any road condition alerts for your specific corridor the night before and morning of travel. Must

Fuel and Logistics

Fill your tank completely at the last major town before entering long service gaps — never enter a remote desert stretch below half a tank. Must
If your route includes segments exceeding 80 miles without a confirmed open gas station, carry an approved fuel can with additional fuel. Should
Verify that planned gas stations are currently open — hours and closures on remote desert routes can be inconsistent. Must
Carry cash; some remote stations do not accept cards or have unreliable card terminals. Nice to have
Plan your driving hours to avoid peak midday heat (roughly 11 a.m. to 4 p.m.) when possible, especially in summer months. Should
Review your driver's licence, vehicle registration, and insurance documents are current and accessible — see the new driver documents checklist for a complete verification list. Must

On the Road: What to Monitor and Never Skip

Even a perfectly prepared vehicle can run into trouble on a desert highway. Your job once you're moving is to stay observant, stay hydrated, and stay honest about conditions.

Flash Floods Are a Year-Round Desert Risk

Desert terrain channels rainfall from distant mountains into dry washes with little warning. A sunny sky where you're driving doesn't mean it's dry upstream. Never park or camp in a wash or canyon bottom, and check weather forecasts for the broader region — not just your immediate location. If water begins rising on a road, turn around immediately; do not attempt to drive through moving water.

Driving in the early morning or late afternoon avoids peak heat hours and dramatically reduces the risk of overheating — both for you and your vehicle. If your temperature gauge climbs into the red, pull over immediately, turn off the engine, and do not open the radiator cap while hot. If you break down, stay with your vehicle. It's far easier for emergency responders to spot a vehicle than a person walking in the desert.

Before any long desert drive, make sure someone back home knows your planned route, intended stops, and expected arrival time. If you haven't checked in by a set time, they should know to contact authorities. This simple step has saved lives. Pair it with the broader preparation habits outlined in this pre-departure trip checklist for full coverage.

Required

Offline Map App (e.g. Maps.me or Google Maps offline)

Provides turn-by-turn navigation in areas with no cellular service.

Optional

Satellite Communicator / Personal Locator Beacon

Allows you to send an emergency SOS or check-in message when completely off the cellular grid.

Optional

Portable Tyre Inflator

Lets you reinflate a tyre after a slow leak or after fitting the spare, without waiting for roadside assistance.

Required

Insulated Water Containers

Keeps drinking water cool and palatable during long stretches in extreme heat.

Required

National Weather Service App or Radio

Provides official weather alerts and flash flood warnings for your specific desert corridor.

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