The Turn That Feels Free But Isn't
You learned to drive in Florida and are on St. Croix for a week in a left-hand-drive rental. Traffic here keeps left. You are stopped at a stop sign on a side road meeting a main road in a T. You want to head east, which means a right turn onto the main road. A pickup is approaching from your right about 250 feet away at what looks like 35 mph, and a second vehicle is close behind it. A car is queued behind you. Your passenger says, 'Just go - it's a right turn, you don't cross anything.' You have never driven in left-hand traffic before this trip.
1. In left-hand traffic, which turn from this side road crosses the oncoming lane, and why does the answer feel wrong?
Read the worked answer
Keeping left means the lane nearest you on the main road is the one carrying traffic toward your right - traffic that will approach from the right and pass in front of you.
- Right turn: you must cross that near lane to reach the lane going east. The right turn is the long turn and it crosses oncoming traffic.
- Left turn: you join the near lane directly. The left turn is the short, unprotected-by-nothing turn.
This is the mirror image of what twenty years of right-hand traffic taught you, and that is exactly where the danger lives. Your reflex says 'right on red, right is free, right needs no gap.' Every one of those reflexes is inverted. The passenger's advice is the single most dangerous sentence in the car.
2. Is the gap adequate? The pickup is 250 feet out at roughly 35 mph and you need about 4 seconds to cross and clear.
Read the worked answer
Do the arithmetic instead of trusting the glance.
- 35 mph is about 51 feet per second.
- 250 ft ÷ 51 ft/s ≈ 4.9 seconds until the pickup reaches you.
- Your maneuver needs about 4 seconds - and that 4 seconds assumes you are already moving. From a standing start, with a loaded turn and a passenger talking, expect longer.
That leaves roughly a one-second margin against a closing vehicle, with a second vehicle behind it that you have not timed at all. The gap is not adequate. Hold.
Note also the trap in the estimate: the second vehicle will arrive sooner after the first than the first arrives after you, so a gap that barely works for one vehicle is not a gap for two.
3. The driver behind you honks twice. What do you do?
Read the worked answer
Nothing, and then keep doing nothing until the gap is genuinely clear.
The driver behind you:
- Cannot see your sight lines. They are looking at your bumper, not down the main road.
- Has no exposure. If you go and are hit, their car is untouched and their insurance is untouched.
- Has no information. They cannot see the closing speed of the pickup any better than your passenger could.
A horn is a signal, not a gap. If the pressure is making you rush your scan, deliberately restart it: right, left, right, then decide. If you do find yourself committed with a vehicle closing faster than you judged, finish the maneuver promptly - hesitating mid-intersection is worse than completing it.