Every year, thousands of deer are killed on British roads, with many more injured and left to suffer. Drivers face vehicle damage, injuries, and worse. In Sussex—particularly around the Ashdown Forest area—deer vehicle collisions are a serious and growing problem.

The Scale of the Problem

Nationally, estimates suggest 74,000 deer vehicle collisions occur annually in the UK, resulting in:

  • 400-700 human injuries
  • Up to 20 human fatalities
  • Millions of pounds in vehicle damage
  • Significant animal suffering

Sussex, with its high deer populations and busy rural roads, experiences more than its share of these incidents.

Sussex Hotspots

Certain roads see consistently high numbers of deer collisions:

A22 (Ashdown Forest Area)

The A22 running through the Ashdown Forest area is one of the worst-affected roads in the county. The road cuts through prime deer habitat, with animals crossing regularly between forest areas and farmland on either side.

Particular problem sections include:

  • Between Nutley and Wych Cross
  • Around Forest Row
  • The stretch south towards Uckfield

A275

Running along the western edge of Ashdown Forest, the A275 sees regular deer crossings, particularly:

  • Between Sheffield Park and Danehill
  • Around Chelwood Gate

Other Problem Areas

Peak Times for Collisions

Deer are crepuscular—most active at dawn and dusk. This means collision risk peaks during:

Daily Peaks

  • Dawn: 5-8am (varies seasonally)
  • Dusk: 5-9pm (varies seasonally)

The evening peak is particularly dangerous as it coincides with commuter traffic.

Seasonal Peaks

October-December: The highest risk period

  • Fallow deer rut (October-November) increases movement
  • Shorter days mean more driving in darkness
  • Deer more active as they build reserves for winter

May-July: Secondary peak

  • Young deer dispersing from mothers
  • Inexperienced animals more likely to cross roads
  • Roe deer rut increases male movement

Worst Conditions

Collision risk increases in:

  • Darkness and twilight
  • Rain and poor visibility
  • Areas with roadside vegetation (deer emerge suddenly)
  • During or after harvesting of adjacent crops (removes cover)

How to Reduce Your Risk

When Driving

Slow down in high-risk areas: The deer warning signs are there for a reason. Reducing speed gives you more time to react.

Be extra vigilant at dawn and dusk: This is when deer are most active. Scan the roadside, not just the road ahead.

Use full beam when safe: Better visibility helps spot deer earlier. Dip for oncoming traffic but use full beam otherwise on unlit roads.

Watch for the second deer: Deer rarely travel alone. If one crosses, expect more to follow.

Don’t swerve violently: Swerving into oncoming traffic or a tree can be worse than hitting the deer. Brake firmly in a straight line if impact is unavoidable.

If You Hit a Deer

  1. Stop in a safe place: Pull over, turn on hazard lights
  2. Don’t approach an injured deer: They can kick and cause serious injury
  3. Report the collision: Call police on 101 (or 999 if there’s a danger to traffic)
  4. Don’t attempt to move a dead deer: It could be heavier than you think and traffic is a hazard
  5. Note the location: Helps responders locate the scene

If You See an Injured Deer

Call the police on 101. They can arrange for an authorised person to humanely dispatch a suffering animal. Don’t attempt to approach or help the deer yourself.

The Role of Deer Management

High deer populations directly correlate with collision rates. More deer means more crossings, which means more collisions.

Effective deer management reduces local populations to sustainable levels, which:

  • Decreases the number of deer crossing roads
  • Reduces overall collision risk
  • Benefits drivers, local communities, and deer welfare

This is one reason why landowners allowing deer management on their property contribute to road safety as well as protecting their own land.

Deer Warning Signs

The triangular deer warning signs indicate areas with known collision history. When you see these signs:

  • Reduce speed immediately
  • Increase vigilance
  • Be prepared to stop
  • Watch for deer on both sides of the road

Unfortunately, not all high-risk areas are signed, and deer can appear anywhere with adjacent woodland or farmland.

What Landowners Can Do

If you own land adjacent to busy roads:

Clear sight lines: Keep vegetation trimmed near road boundaries so drivers can see deer approaching

Manage deer numbers: Reducing the population on your land means fewer deer crossing local roads

Consider fencing: Strategic fencing can guide deer to safer crossing points, though this requires professional design

Report collision hotspots: If you notice regular incidents near your land, report to the local highways authority

Get Help with Deer Management

If you’re a landowner in the Ashdown Forest area or elsewhere in Sussex, I provide free deer management services that can help reduce local deer numbers—benefiting both your land and road safety in your area.

Contact me to discuss your situation.

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