Speed Limits and Control

Driving at 30 mph or less in good conditions

At speeds of 30 mph or less in good weather, a 2-second gap helps ensure time to react to sudden stops and reduces rear-end collisions.

If you are driving above 30 mph in good road conditions

Driving over 30 mph, a 4-second gap gives you more time to react and stop safely in case of sudden traffic changes.

When roads are wet, crowded, or visibility is limited

Always slow down and increase your following distance. Wet roads and reduced visibility make stopping harder and riskier.

If your field of vision is reduced at higher speeds

Driving faster narrows your peripheral vision. At 60 mph, your field of vision drops significantly. Slowing down improves awareness.

In school zones, business, or residential areas unless otherwise posted

New Jersey law sets the default speed limit to 25 mph in school zones, residential, or business areas unless posted otherwise.

In suburban business and residential areas unless posted otherwise

Suburban areas generally have a 35 mph speed limit unless otherwise indicated.

On non-posted rural roadways under normal conditions

The default limit on rural roads is 50 mph where no signs are posted, assuming safe conditions.

On state highways or posted interstates

Certain highways have posted limits of 55 mph. Always follow signage and adjust for road conditions.

On certain interstate highways

Some interstate highways allow 65 mph, but fines double for exceeding by 10 mph or more.

On narrow, winding roads or at intersections

Reduce your speed on narrow roads, curves, or intersections to maintain control and visibility.

In construction zones with workers or equipment present

New Jersey law doubles fines for speeding in construction zones when workers or equipment are present. Slow down and obey all posted signs.

In posted Safe Corridors

Safe Corridors are high-crash areas where all traffic violations result in doubled fines. Drive carefully and follow posted speed limits.

On roads with sharp or blind curves

Sharp curves limit sight and steering control. Slower speeds prevent lane drift and accidents.

When approaching hills or inclines

Gravity affects control on hills. Reduce speed to safely ascend or descend.

On slippery roads due to rain or snow

Wet roads increase stopping distance and cause skids. Adjust speed to road traction.

In fog, mist, or low-visibility conditions

Visibility drops significantly in fog. Slower driving improves reaction time and reduces crash risk.

When merging onto highways from ramps

Entrance ramps often have advisory speed limits to help you merge smoothly and safely.

When driving at night with limited visibility

You must be able to stop within the distance lit by your headlights. Driving too fast can hide hazards.

On turnpikes during poor weather

High speeds are unsafe during adverse weather. Adjust speed to conditions even on high-speed roads.

When passing through marked animal crossings or wildlife zones

Wildlife zones require caution as animals may cross suddenly, especially at dawn or dusk.