There are varying travel restrictions imposed where vehicles cannot be taken. Breaching these restrictions voids insurance cover and may incur additional costs. These do differ between suppliers so check when collecting your vehicle. Travel is restricted in:
Death Valley - The name says it all - due to extreme summer temperatures of up to 60C, travel is not permitted between May and September
New York City & Manhattan - No travel
Quebec, Montreal and Ottawa - risk of motorhome theft means vehicles are not to be parked within city limits
Alaska & North Canadian Provinces - Some restrictions, El Monte permits use but at hirer's risk - limited cover
Mexico - some suppliers have blanket bans whilst others (El Monte) allow at hirer's risk with purchase of Mexico Auto Liability Insurance. No cover for repairs, loss of use - limited cover
Off-road - No travel on unsealed, gravel or logging roads & tracks
Drive Through and Parking structures - due to risk of overhead damage vehicles cannot be taken through Drive-thrus or within parking buildings