With deer numbers near record highs, Hertfordshire County Council is sounding the alarm: road users must take extra care this autumn, especially along rural and woodland-adjacent routes. 

Male fallow deer are particularly active during September and October, roaming several miles daily in search of a mate. Their movements tend to peak at dawn and dusk — times when many motorists are beginning or ending their journeys. 

"We would urge drivers and motor cyclists … to be cautious and drive a little slower at this time of the year, especially on rural and semi-rural roads," said Cllr Stephen Giles-Medhurst, Executive Member for Highways. "We have taken steps to erect deer fences in locations which are known migration crossing points … but we are unable to protect every road." 

The deer population in Hertfordshire is widespread, with concentrations in woodland and countryside areas. While deer sightings do occur in residential zones, the greatest collision risk lies where fast roads pass near wooded stretches. 

If drivers do hit a deer, the council asks that the incident be promptly reported to police on 101. 

🦌 Tips to Avoid Collisions

• Slow down in high-risk stretches, particularly near woodland or when visibility is poor.
• Heed "deer crossing" signs — they're placed where collisions are more likely.
• Use full-beam headlights when safe — deer's eyes may reflect the light and give away their presence.
• Remember: deer often travel in groups. If you spot one, more may follow.
• Don't over-swerve — doing so may lead to more dangerous collisions with other road users.
• Leave extra stopping distance — roads can be more slippery thanks to damp leaves.

For additional advice on staying safe during deer season, Hertfordshire Council directs drivers to the British Deer Society's guidance.