TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

EV versus ICE: Deer in the Headlights

Discussion in 'Roadster' started by Doug_G, Oct 25, 2010.

  1. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,852
    Location:
    Ottawa, Canada
    There has been speculation in this forum in the past about how animals would respond to an EV when surprised at night. See Unusual Questions from the Public.

    Well, I just gathered my first empirical evidence.

    In all previous experiences encountering deer at night in an ICE car, upon approach of the car, the deer would bolt in a random direction. Since this random direction would go across my path 50% of the time, this resulted in periodic near misses. Although I've not yet hit a deer, it happens all the time around here. Damage can be considerable. A friend of mine wrote off his minivan after a deer impact.

    Tonight I came across a doe while driving my Roadster at 100 km/h. She was standing on the opposite shoulder, facing the road with her nose right at the edge of the pavement. Watching me. Ideal conditions for a collision. When I saw her I immediately hit the brakes, expecting the worst, but nothing happened. Bambi just stood there and watched me go by.

    Advantage: EV!
     
  2. mt2

    mt2 Member

    Joined:
    Aug 29, 2007
    Messages:
    544
    Location:
    Chicago Area, Northwest Burbs
    I wonder if the electric motor's has a high pitched whine that alerts them. Pure speculation, of course. But when the question first appeared, that was my immediate thought. I thought of those 'wildlife alert whistles' that you can attach to your front bumper and supposedly emit a high pitched whine deer can hear but humans can not.

    Hmm, maybe that's the solution to the minimum auto sound level problem. Tell people the noise is there, you just have to listen at a higher octave.
     
  3. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,852
    Location:
    Ottawa, Canada
    In my experience the deer are already looking at your headlights long before they startle. I think it's the ICE rumbling sound that does it.
     
  4. stopcrazypp

    stopcrazypp Well-Known Member

    Joined:
    Dec 8, 2007
    Messages:
    7,047
    Don't know if there is scientific proof of this, but the lower pitch ICE rumbling might make the deer think it is a predator approaching, which triggers the instinctive action of running in a random direction.
     
  5. SByer

    SByer '08 #383

    Joined:
    Oct 23, 2007
    Messages:
    1,068
    Location:
    Cupertino, CA
    On my Sunday morning bike rides, I don't worry about the deer - they really aren't triggered to flee by sight, I don't think. I get right up next to them (within 3 feet a few times) before they even bother moving. The ICE rumble predator theory sounds plausible to me.
     
  6. jcstp

    jcstp Active Member

    Joined:
    Feb 7, 2011
    Messages:
    1,627
    Location:
    Belgium
    Here the deer stay at the side of the road, not bothering about ICE-cars passing by!

    The only thing I know and saw on tv, was that in a forest somewhere they put reflectors on the side of the road! When the headlights reflected in them, the reflectors resembled the eyes of wolves! This freightened the deer and scared them off the road! With less accidents as à result!
     
  7. markwj

    markwj Moderator, Asia Pacific

    Joined:
    Apr 10, 2011
    Messages:
    3,664
    Location:
    Hong Kong
    Around where I live the problem is feral cows. They think they own the place and don't get out of the way for anything...
     
  8. daniel

    daniel Active Member

    Joined:
    May 7, 2009
    Messages:
    1,131
    Location:
    Spokane, WA
    Feral cows??? That's hilarious! But I know what you mean about cows. I worked on a dairy farm.
     
  9. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,852
    Location:
    Ottawa, Canada
    Here in Ottawa, a motorcycle driver was killed by hitting a deer a couple of days ago, and there was another accident with injuries last night. The deer population is getting out of hand.
     
  10. NEWDL

    NEWDL R#350 R#1323 Sig23 8136

    Joined:
    Jan 5, 2009
    Messages:
    473
    Location:
    NE OHIO
    I had an amazing experience in the Roadster relatively soon after we got it in Spring of 2009. We live near some of the Metro Parks in Northeast Ohio, I was going down a hill into a valley that is known for deer high population. In fact it was less than 1 mile away from where my father hit a deer with his 1954 Jaguar XK 120 6 years earlier.

    Anyhow, I amazingly heard the deer running before I saw it. I hit the brakes and it ran in front of the car at full speed over to the other side of the road. I was amazed. It made me realize the advantages of a quiet car. I can not count the ways we love our Roadsters...
     
  11. Jaff

    Jaff Active Member

    Joined:
    Aug 15, 2010
    Messages:
    3,007
    Location:
    Grimsby, Canada
    Down in Niagara too Doug...we're seeing a rising number of deer / vehicle incidents...(time for another black powder shoot imo)

     
  12. doug

    doug Administrator / Head Moderator

    Joined:
    Nov 28, 2006
    Messages:
    15,914
    Location:
    Stanford, California
    This reminds me of that racing arcade game Crusin' USA. If you hit a cow on the road, it would explode into a bunch of steaks.


    As for deer. I hit a deer at 70 mph some years back going north on 280. Now that was scary.
     
  13. Lloyd

    Lloyd Active Member

    Joined:
    Jan 12, 2011
    Messages:
    4,885
    Location:
    San Luis Obispo, CA
    Try a cow in the fog at 70. It took the front left fender off my Porsche.
     
  14. Dragon

    Dragon Lightning Green Fairytale

    Joined:
    Dec 6, 2010
    Messages:
    450
    Location:
    Italy
    Ahaha, I remember that as well. Shitty game, but nonetheless it was fun. The good old times.
     
  15. bolosky

    bolosky Member

    Joined:
    May 5, 2009
    Messages:
    422
    Well, at least the cows in California stay on the ground. Here in Washington state, they leap from cliffs to smash up vehicles.

    What are the odds? Couple nearly killed by falling cow | Seattle News, Weather, Sports, Breaking News | KOMO News | Local & Regional

    [​IMG]

    I've seen this sign at the site of the incident near Manson, WA.

    Obligatory on-topic comment: I doubt that the falling cows care how much noise the vehicle makes.
     
  16. markwj

    markwj Moderator, Asia Pacific

    Joined:
    Apr 10, 2011
    Messages:
    3,664
    Location:
    Hong Kong
  17. TEG

    TEG TMC Moderator

    Joined:
    Aug 20, 2006
    Messages:
    17,252
    Location:
    Silicon Valley
    But did you make it to the 'hot tub' ? :redface::love::biggrin:
     
  18. TEG

    TEG TMC Moderator

    Joined:
    Aug 20, 2006
    Messages:
    17,252
    Location:
    Silicon Valley
  19. vfx

    vfx Well-Known Member

    Joined:
    Aug 18, 2006
    Messages:
    14,792
    Location:
    CA CA
    lol
    Raining Cows and Hogs.
     

Share This Page